{ "layers": [ { "layerId": 0, "layerName": "iowa_border", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "ef14431d55bc468e491a21b09009da26", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOElEQVQ4jWNhYGBIY2BgUGKgDrjHAjWsgkoGdrBQySA4GDVw1MBRA0cNHDUQYeA9BgaGDiqZdw8ArYYFHZsmthMAAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 102, "layerName": "Airphotos_1930s_01.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "241 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 103, "layerName": "Airphotos_1930s_02.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "224 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 104, "layerName": "Airphotos_1930s_03.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "186 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 105, "layerName": "Airphotos_1930s_04.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "179 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 106, "layerName": "Airphotos_1930s_05.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "197 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 107, "layerName": "Airphotos_1930s_06.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "215 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 108, "layerName": "Airphotos_1930s_07.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "175 - 89", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 109, "layerName": "Airphotos_1930s_08.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "217 - 74", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 110, "layerName": "Airphotos_1930s_09.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "215 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 111, "layerName": "Airphotos_1930s_10.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "189 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 112, "layerName": "Airphotos_1930s_11.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "231 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 113, "layerName": "Airphotos_1930s_12.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "199 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 114, "layerName": "Airphotos_1930s_13.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "171 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 115, "layerName": "Airphotos_1930s_14.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "213 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 116, "layerName": "Airphotos_1930s_15.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "176 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 117, "layerName": "Airphotos_1930s_16.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "187 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 118, "layerName": "Airphotos_1930s_17.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "174 - 78", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 119, "layerName": "Airphotos_1930s_18.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "192 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 120, "layerName": "Airphotos_1930s_19.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "167 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 121, "layerName": "Airphotos_1930s_20.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "189 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 122, "layerName": "Airphotos_1930s_21.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "206 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 123, "layerName": "Airphotos_1930s_22.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "205 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 124, "layerName": "Airphotos_1930s_23.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "176 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 125, "layerName": "Airphotos_1930s_24.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "213 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 126, "layerName": "Airphotos_1930s_25.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "228 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 127, "layerName": "Airphotos_1930s_26.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "183 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 128, "layerName": "Airphotos_1930s_27.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "193 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 129, "layerName": "Airphotos_1930s_28.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "197 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 130, "layerName": "Airphotos_1930s_29.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "214 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 131, "layerName": "Airphotos_1930s_30.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "214 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 132, "layerName": "Airphotos_1930s_31.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "207 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 133, "layerName": "Airphotos_1930s_32.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "202 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 134, "layerName": "Airphotos_1930s_33.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "183 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 135, "layerName": "Airphotos_1930s_34.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "189 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 136, "layerName": "Airphotos_1930s_35.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "188 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 137, "layerName": "Airphotos_1930s_36.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "191 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 138, "layerName": "Airphotos_1930s_37.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "229 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 139, "layerName": "Airphotos_1930s_38.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "204 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 140, "layerName": "Airphotos_1930s_39.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "185 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 141, "layerName": "Airphotos_1930s_40.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "209 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 142, "layerName": "Airphotos_1930s_41.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "187 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 143, "layerName": "Airphotos_1930s_42.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "187 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 144, "layerName": "Airphotos_1930s_43.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "215 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 145, "layerName": "Airphotos_1930s_44.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "173 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 146, "layerName": "Airphotos_1930s_45.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "205 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 147, "layerName": "Airphotos_1930s_46.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "190 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 148, "layerName": "Airphotos_1930s_47.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "198 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 149, "layerName": "Airphotos_1930s_48.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "184 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 150, "layerName": "Airphotos_1930s_49.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "255 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 151, "layerName": "Airphotos_1930s_50.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "217 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 152, "layerName": "Airphotos_1930s_51.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "191 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 153, "layerName": "Airphotos_1930s_52.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "195 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 154, "layerName": "Airphotos_1930s_53.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "198 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 155, "layerName": "Airphotos_1930s_54.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "202 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 156, "layerName": "Airphotos_1930s_55.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "202 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 157, "layerName": "Airphotos_1930s_56.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "200 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 158, "layerName": "Airphotos_1930s_57.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "174 - 58", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 159, "layerName": "Airphotos_1930s_58.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "192 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 160, "layerName": "Airphotos_1930s_59.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "174 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 161, "layerName": "Airphotos_1930s_60.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "229 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 162, "layerName": "Airphotos_1930s_61.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "177 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 163, "layerName": "Airphotos_1930s_62.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "201 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 164, "layerName": "Airphotos_1930s_63.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "203 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 165, "layerName": "Airphotos_1930s_64.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "171 - 14", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 166, "layerName": "Airphotos_1930s_65.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "223 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 167, "layerName": "Airphotos_1930s_66.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "187 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 168, "layerName": "Airphotos_1930s_67.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "211 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 169, "layerName": "Airphotos_1930s_68.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "181 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 170, "layerName": "Airphotos_1930s_69.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "185 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 171, "layerName": "Airphotos_1930s_70.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "234 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 172, "layerName": "Airphotos_1930s_71.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "213 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 173, "layerName": "Airphotos_1930s_72.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "183 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 174, "layerName": "Airphotos_1930s_73.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "209 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 175, "layerName": "Airphotos_1930s_74.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "189 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 176, "layerName": "Airphotos_1930s_75.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "196 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 177, "layerName": "Airphotos_1930s_76.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "196 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 178, "layerName": "Airphotos_1930s_77.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "191 - 79", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 179, "layerName": "Airphotos_1930s_78.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "198 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 180, "layerName": "Airphotos_1930s_79.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "178 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 181, "layerName": "Airphotos_1930s_80.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "178 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 182, "layerName": "Airphotos_1930s_81.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "217 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 183, "layerName": "Airphotos_1930s_82.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "178 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 184, "layerName": "Airphotos_1930s_83.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "200 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 185, "layerName": "Airphotos_1930s_84.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "184 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 186, "layerName": "Airphotos_1930s_85.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "165 - 98", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 187, "layerName": "Airphotos_1930s_86.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "193 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 188, "layerName": "Airphotos_1930s_87.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "200 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 189, "layerName": "Airphotos_1930s_88.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "186 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 190, "layerName": "Airphotos_1930s_89.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "172 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 191, "layerName": "Airphotos_1930s_90.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "183 - 73", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 192, "layerName": "Airphotos_1930s_91.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "231 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 193, "layerName": "Airphotos_1930s_92.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "192 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 194, "layerName": "Airphotos_1930s_93.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "183 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 195, "layerName": "Airphotos_1930s_94.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "210 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 196, "layerName": "Airphotos_1930s_95.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "175 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 197, "layerName": "Airphotos_1930s_96.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "182 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 198, "layerName": "Airphotos_1930s_97.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "199 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 199, "layerName": "Airphotos_1930s_98.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "178 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] }, { "layerId": 200, "layerName": "Airphotos_1930s_99.sid", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "191 - 0", "url": "f4e762c2f876d4e5c95b3dcafbff81e0", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 60, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "Value" } ] } ] }