{"layers": [
 {
  "layerType": "Feature Layer",
  "layerId": 62,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATklEQVQ4jWPJy87ezvD/vwMDNQAj4wEWkGGs06ZxUMO831lZDiwMVAYsowZSDFgoNwIVjBpIOWChghkoYNTAkWEgI+MBUElLFdMYGQ8AAKMNDmVSGOSSAAAAAElFTkSuQmCC",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "7e53e8eab70a8d3377977654a7eb6b94",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "2020's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 61,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWPJz87ezvT/vwMDFcA/RsYDLCDDzKdN46CGgSezshxYGKgMWEYNpBiwUG4EKhg1kHLAQgUzUMCogSPCwH+MjAdAJS01DAOZBQAP7REyF8RnigAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "5094644fb55858e1c29f4b301222d852",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "2010's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 60,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpzM7ezvT/vwMDFcA/RsYDLCDDiqdN46CGgb1ZWQ4sDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBFh4D9GxgOgkpYahoHMAgAboxD4SJKzagAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "eee5a7a8f40bfc54ae395f00f9d1f468",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "2000's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 59,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpys7ezvT/vwMDFcA/RsYDLCDDuqdN46CGgaVZWQ4sDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBFh4D9GxgOgkpYahoHMAgAhlhDh03y3yQAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "892bd5913fe151e2635d3cd4eb8025de",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1990's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 58,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpzM/ezsTw34GBCuAfA+MBFpBhxZrTOKhhYO/1LAcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8B8D4wFQSUsNw0BmAQDsZg9oZ40ScAAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "1977a67014a6067322ef1b442e15c35a",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1980's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 57,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpKszbzsTI4MBABfDvP8MBFpBh3YmCHNQwsHT+ewcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8N9/hgOgkpYahoHMAgAo9hChxkm9NwAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "ee3352e5088668f964bfee8ef083fb8f",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1970's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 56,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpKszfzsTE5MBABfDv378DLCDDuivsOKhhYGnHIQcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8N+/fwdAJS01DAOZBQCV6RNbTXk95AAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "54f59d52ff6fb08547186625aa78fd1a",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1960's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 55,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpKirczsTE6MBABfDv3/8DLCDDurt9OKhhYGnpFgcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8N+//wdAJS01DAOZBQCikBM+BzFBFgAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "404857f3d52a98aa3b3d5468f0038f22",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1950's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 54,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpKsrbzsTE4MBABfDvH8MBFpBh3d2sHNQwsLT0twMLA5UBy6iBFAMWyo1ABaMGUg5YqGAGChg1cEQY+O8fwwFQSUsNw0BmAQA02RCDV90uqQAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "8cb579f769cf0ac8a533f66149722e34",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1940's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 53,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpKsrezsT034GBCuDfP8YDLCDDuruncVDDwNLSLAcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8N8/xgOgkpYahoHMAgBogBHwtV3XTAAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "53521a62138a996f2254169ae8ea14d8",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1930's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 52,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpKsrbzsTE4MBABfDvH8MBFpBh3d2sHNQwsLT0twMLA5UBy6iBFAMWyo1ABaMGUg5YqGAGChg1cEQY+O8fwwFQSUsNw0BmAQA02RCDV90uqQAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "8cb579f769cf0ac8a533f66149722e34",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1920's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 51,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpKirczsTE6MBABfDv3/8DLCDDurt9OKhhYGnpFgcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8N+//wdAJS01DAOZBQCikBM+BzFBFgAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "404857f3d52a98aa3b3d5468f0038f22",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1910's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 50,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpLCrczsjE5MBABfD/378DLCDDfLpLOahh4JbSbgcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8P+/fwdAJS01DAOZBQCc6RNTZKpYyQAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "47213475c1f564b61a65a681c8a335e6",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1900's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 49,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpLCzazsjE5MBABfD/378DLCDDfEq7Oahh4JbuUgcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8P+/fwdAJS01DAOZBQCc/hNTz0lCTgAAAABJRU5ErkJggg==",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "986c2a04b2f554867a03c4d0907b6d9c",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1880's",
  "minScale": 0
 },
 {
  "layerType": "Feature Layer",
  "layerId": 48,
  "maxScale": 0,
  "legend": [{
   "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATklEQVQ4jWPJKyzazsDE5MBADfDv3wEWkGGsOd0c1DDv95RSBxYGKgOWUQMpBiyUG4EKRg2kHLBQwQwUMGrgyDDw378DoJKWKqb9+3cAACnsEKGySVaWAAAAAElFTkSuQmCC",
   "groupId": "0",
   "width": 20,
   "label": "",
   "contentType": "image/png",
   "url": "cd422e9e0a67f64d62eefbd051450789",
   "height": 20
  }],
  "legendGroups": [{
   "heading": "",
   "id": "0"
  }],
  "layerName": "1878's",
  "minScale": 0
 }
]}