{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Historic Buildings",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "1830 - 1869",
     "url": "6c53ff77307b41eec2f8d37c7a1fef50",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWORU1LN5+HlM2CgAvjy+dMFFpBhS7efVKCGgdGe5gwsDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERhl8+f7oAKmmpAUBmAQBokxDJ5wStMwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "<Null>",
      "1837",
      "1868"
     ]
    },
    {
     "label": "1870 - 1889",
     "url": "f31c930097a8860a22a4dde89705d3cf",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWORUZXJ5+TjNGCgAvj+6fsFFpBhk05OVKCGgXnm+QwsDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERht8/fb8AKmmpAUBmAQAMzREBrIi0wwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "1870",
      "1875",
      "1876",
      "1880",
      "1885",
      "1886",
      "1887",
      "1888"
     ]
    },
    {
     "label": "1890 - 1899",
     "url": "d327f6cddf877288781a89eefc022d05",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATklEQVQ4jWNRlVTK5+PhM2CgAvj05dMFFpBhJ/v2K1DDQPMiRwYWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4IgIw09fPl0AlbTUACCzAE73ENLpjnujAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "1890",
      "1892",
      "1894",
      "1895",
      "1896",
      "1897",
      "1898",
      "1899"
     ]
    },
    {
     "label": "1900 - 1929",
     "url": "63bf35b10e7d6418b031acd6e2d9ccb1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWNRlZPJ5+PhNGCgAvj05fsFFpBhJ5dMVKCGgeYx+QwsDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERhp++fL8AKmmpAUBmAQAq7RDuZDJUzQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "1900",
      "1901",
      "1903",
      "1904",
      "1905",
      "1907",
      "1910",
      "1912",
      "1914",
      "1915",
      "1916",
      "1917",
      "1920",
      "1921",
      "1923",
      "1924",
      "1925",
      "1926",
      "1927",
      "1928",
      "1929"
     ]
    },
    {
     "label": "1930 - 1949",
     "url": "dee8642cff8bd24d25655a3d196a02db",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMxszRMFhYWNGCgAnj79v0FFpBhyzZM1aGGgVEB2QwsDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERhm/fvr8AKmmpAUBmAQA5jBEuGE1gEQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "1930",
      "1931",
      "1932",
      "1934",
      "1935",
      "1936",
      "1937",
      "1938",
      "1939",
      "1940",
      "1941",
      "1942",
      "1946",
      "1947",
      "1948",
      "1949"
     ]
    },
    {
     "label": "1950 - 1970",
     "url": "55189e9227e75f5e3fb077691d252365",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATklEQVQ4jWPR1LRM5ucXNmCgAvj48e0FFpBhdfUbdKhhYFNjAAMLA5UBy6iBFAMWyo1ABaMGUg5YqGAGChg1cESE4cePby+ASlpqAJBZAJHnEV1qQD/sAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "1950",
      "1960",
      "1965",
      "1967",
      "1968"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Date"
    }
   ]
  }
 ]
}