{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02662_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Fort Dodge, Iowa | 1916 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"54"},{"label":"placed","value":"29"},{"label":"unplaced","value":"25"},{"label":"fit sources","value":"georef 23, georef-snap 4, snap:0 1, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"10 sheet(s) cut into 34 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 42.50274,-94.20356 +/-628m); p12__2 (tier 1, 42.50653,-94.18401 +/-100m); p12__3 (tier 1, 42.50662,-94.18467 +/-100m); p17__2 (tier 1, 42.50163,-94.19210 +/-108m); p20__1 (tier 2, 42.49972,-94.18836 +/-100m); p20__2 (tier 2, 42.49972,-94.18836 +/-100m); p20__3 (tier 1, 42.49751,-94.18459 +/-100m); p25__3 (tier 1, 42.49058,-94.16877 +/-100m); p26__2 (tier 1, 42.49799,-94.19717 +/-100m); p26__3 (tier 1, 42.50367,-94.19523 +/-150m); p27__1 (tier 1, 42.51020,-94.20069 +/-101m); p27__2 (tier 1, 42.47522,-94.18175 +/-158m); p27__3 (tier 3, 42.49786,-94.19552 +/-2672m); p27__4 (tier 1, 42.51281,-94.20431 +/-100m); p27__5 (tier 1, 42.51254,-94.20502 +/-145m); p27__6 (tier 1, 42.51269,-94.20300 +/-126m); p28__1 (tier 1, 42.48575,-94.17146 +/-258m); p28__2 (tier 1, 42.48670,-94.17016 +/-100m); p28__3 (tier 3, 42.48493,-94.17091 +/-628m); p28__4 (tier 1, 42.48678,-94.17089 +/-100m); p28__5 (tier 1, 42.48710,-94.16980 +/-100m); p29 (tier 2, 42.50291,-94.19308 +/-100m); p2__2 (tier 1, 42.50948,-94.18862 +/-100m); p30__2 (tier 1, 42.50762,-94.16870 +/-125m); p30__4 (tier 1, 42.50756,-94.16807 +/-193m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p10","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"341.3,1393.6 267.3,1386.7 220.2,1309.5 282.4,1198.6 311.1,1058.6 297.5,129.4 1343.8,128.4 1350.3,1779.8 1203.2,1780.2 1201.8,1663.5 108.1,1677.6 341.3,1393.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[860.0,1234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1884133,42.5039137]}},{"type":"Feature","properties":{"resourceCoords":[1343.0,684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.187465,42.5050801]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p11","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"15"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"274.2,1778.8 269.4,119.8 1364.0,119.0 1371.2,1776.8 274.2,1778.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[268.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.187465,42.5050801]}},{"type":"Feature","properties":{"resourceCoords":[1364.0,119.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1850143,42.5064632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p12 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"15"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4700.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"904.4,1604.3 970.4,1239.6 979.5,1166.6 1067.6,663.4 955.5,675.4 1043.8,130.6 114.0,120.0 114.2,1774.3 745.1,1777.8 794.9,1585.2 904.4,1604.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[114.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1847549,42.5054469]}},{"type":"Feature","properties":{"resourceCoords":[114.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1850143,42.5064632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p12 [4]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"3430.4"},{"label":"split_canvas_y","value":"2189.6"},{"label":"split_canvas_w","value":"3021.6"},{"label":"split_canvas_h","value":"5462.4"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1560.7,918.4 1566.5,626.4 1074.1,626.4 1012.8,976.5 1007.0,1724.7 1406.1,1737.5 1560.7,918.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0012__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1567.0,626.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.182858,42.508807]}},{"type":"Feature","properties":{"resourceCoords":[1015.5,626.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1841955,42.5086112]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p13","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"22"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1466.1,1913.0 487.2,1913.0 396.1,1393.6 185.1,1454.3 180.5,89.7 1466.4,92.4 1466.1,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[828.0,1822.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1810409,42.5050698]}},{"type":"Feature","properties":{"resourceCoords":[818.0,91.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1811203,42.5082948]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p14","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"15"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"183.0,1820.0 174.6,85.0 1333.7,81.6 1334.6,630.2 1426.0,629.9 1430.3,1814.0 183.0,1820.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[183.0,1820.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.179428,42.5050908]}},{"type":"Feature","properties":{"resourceCoords":[180.0,635.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1794575,42.5072876]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p15","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"15"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1821.2 93.8,1832.3 91.6,645.7 -0.0,645.9 -0.0,96.1 1613.0,94.2 1613.0,1821.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1188.0,643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1735726,42.5073374]}},{"type":"Feature","properties":{"resourceCoords":[97.0,96.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.176323,42.5083311]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"255.1,1833.6 250.1,95.6 1214.0,91.8 1213.6,0.0 1613.0,0.0 1613.0,512.8 1483.9,512.8 1483.5,640.5 1483.2,1253.9 1485.3,1794.1 255.1,1833.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17313911421013,42.508532710643735]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.16914500716942,42.508551097829326]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.16911563349854,42.50503437662498]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17310974053925,42.505015989439386]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0017__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p17 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0017__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"401.0,1913.0 686.0,1913.0 1006.7,1913.0 1015.9,1039.1 1613.0,1044.1 1613.0,257.1 343.7,266.1 350.5,660.4 -0.0,661.2 -0.0,1913.0 401.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0017__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[346.0,1206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1935646,42.5021776]}},{"type":"Feature","properties":{"resourceCoords":[891.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1906013,42.5015525]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p18","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,96.7 274.2,93.9 493.4,0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0 -0.0,96.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[710.0,1217.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.188977,42.50076]}},{"type":"Feature","properties":{"resourceCoords":[710.0,110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1895011,42.5027317]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p19","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"334.1,1773.4 309.5,-0.0 1613.0,203.3 1613.0,1741.4 334.1,1773.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1345.0,1614.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1864479,42.5011323]}},{"type":"Feature","properties":{"resourceCoords":[803.0,75.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1826623,42.5026831]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p21","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"35"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.1,643.8 -0.0,657.9 -0.0,-0.0 1528.3,0.0 1524.6,58.5 1542.2,59.2 1537.3,1744.3 1549.8,1844.7 559.8,1836.8 537.0,1693.5 267.6,1741.9 79.1,643.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1213.0,1017.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1795531,42.511336]}},{"type":"Feature","properties":{"resourceCoords":[556.0,41.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.182914,42.514875]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p22 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"43"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"72.2,1834.2 1613.0,1833.2 1613.0,551.5 920.9,553.4 927.6,0.0 348.6,0.0 349.0,32.1 48.9,30.1 58.8,1733.9 72.2,1834.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[642.0,1279.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1749909,42.5103769]}},{"type":"Feature","properties":{"resourceCoords":[369.0,1834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.176323,42.5083311]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p22 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"3683.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2768.4"},{"label":"split_canvas_h","value":"2213.6"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,-0.0 927.6,0.0 920.9,553.4 954.2,553.3 952.9,520.7 1522.4,504.1 1519.5,443.0 1613.0,439.7 1613.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0022__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[952.9,520.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1780024,42.514938]}},{"type":"Feature","properties":{"resourceCoords":[1523.1,520.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1765081,42.5149096]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p23","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,1129.8 24.1,1139.3 37.0,321.6 233.4,322.8 193.8,88.8 694.9,92.4 695.3,44.5 1610.2,50.6 1592.5,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0023/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18286457142139,42.50520395666866]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17490218497262,42.505319335711185]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17471788077816,42.4983080741572]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18268026722693,42.498192695114675]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p24","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"29"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"86.9,55.1 1538.1,29.5 1538.1,0.0 1613.0,0.0 1613.0,1913.0 94.6,1908.1 86.9,55.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[913.0,877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.170759,42.5021229]}},{"type":"Feature","properties":{"resourceCoords":[94.0,1775.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1748261,42.4987969]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p25 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"874.0,1913.0 908.7,1472.3 1613.0,1472.8 1613.0,0.0 -0.0,-0.0 0.0,1445.8 500.6,1446.3 500.2,1913.0 874.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[807.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1678409,42.4916555]}},{"type":"Feature","properties":{"resourceCoords":[1350.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.166487,42.4916632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p25 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5783.2"},{"label":"split_canvas_w","value":"2002.4"},{"label":"split_canvas_h","value":"1868.8"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 500.2,1913.0 500.6,1446.3 0.0,1445.8 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0025__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1445.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17411779563821,42.49438837901048]}},{"type":"Feature","properties":{"resourceCoords":[500.6,1445.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17160394773833,42.494399769480964]}},{"type":"Feature","properties":{"resourceCoords":[500.6,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17158953125575,42.49266661368783]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.17410337915562,42.49265522321735]}},{"type":"Feature","properties":{"resourceCoords":[427.6,1839.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1719581,42.492939]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0026__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p26 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0026__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"943.3,1913.0 1613.0,1913.0 1613.0,1184.8 1613.0,562.7 1198.1,569.5 742.9,577.9 549.5,0.0 -0.0,-0.0 -0.0,1913.0 361.4,1913.0 943.3,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0026__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19787527327789,42.49767555811673]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19486566371158,42.49964536034329]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19171939125802,42.49699504433358]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19472900082432,42.495025242107026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p2 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1340.2,0.0 -0.0,-0.0 -0.0,1891.6 240.6,1847.8 288.5,1913.0 393.5,1913.0 385.4,1827.4 1584.0,1705.2 1519.3,1094.8 1174.2,1093.2 1287.1,817.9 1489.3,812.0 1403.2,0.0 1340.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1116.0,427.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1893459,42.5110058]}},{"type":"Feature","properties":{"resourceCoords":[774.0,698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.190139,42.510463]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1458.9,24.0 1466.2,1674.7 375.1,1665.2 376.3,1904.8 -0.0,1895.2 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18880770516564,42.51217836712592]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18486895701521,42.512726024135866]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18399401539585,42.509258264454544]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18793276354629,42.5087106074446]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p30 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3358.8"},{"label":"split_canvas_h","value":"5257.2"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"108.3,0.0 110.3,1258.0 719.4,947.1 833.9,963.3 834.4,884.1 839.7,0.0 108.3,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[108.0,760.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1694472,42.5062446]}},{"type":"Feature","properties":{"resourceCoords":[108.0,131.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1694558,42.5073722]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p30 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"4920.0"},{"label":"split_canvas_y","value":"2900.0"},{"label":"split_canvas_w","value":"1532.0"},{"label":"split_canvas_h","value":"2039.6"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1234.9 1613.0,725.2 1231.0,725.0 1230.5,1019.1 1230.0,1234.9 1613.0,1234.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0030__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1230.0,725.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18610033715821,42.51966782940222]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,725.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18607792055869,42.518249525944846]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1234.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18863680153126,42.51822749507656]}},{"type":"Feature","properties":{"resourceCoords":[1230.0,1234.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18865921813078,42.519645798533936]}},{"type":"Feature","properties":{"resourceCoords":[1271.0,1187.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.188421,42.519496]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1224.1,289.2 1327.7,301.2 1324.4,464.9 1514.9,798.7 1613.0,798.7 1613.0,1649.3 -0.0,1635.6 -0.0,-0.0 969.2,0.0 941.9,235.1 1184.2,219.4 1224.1,289.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[754.0,1009.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.19191,42.506712]}},{"type":"Feature","properties":{"resourceCoords":[1282.0,1648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1903079,42.5057447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p5","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,462.6 -0.0,217.5 1546.0,215.0 1567.0,1614.2 307.4,1622.2 290.6,785.3 194.1,787.2 -0.0,462.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1016.0,771.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1880987,42.5076572]}},{"type":"Feature","properties":{"resourceCoords":[1546.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1870176,42.5088532]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"279.8,1762.3 279.8,95.4 1368.4,107.2 1367.9,1768.9 279.8,1762.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1855321,42.5084642]}},{"type":"Feature","properties":{"resourceCoords":[826.0,105.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1857893,42.5094578]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,-0.0 1613.0,0.0 1613.0,698.9 1436.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.1988001616868,42.50390429285531]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19691152707986,42.50437535771458]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19615903478999,42.50271237474418]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19804766939693,42.50224130988491]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p8","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"11"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1376.6,0.0 1382.6,384.4 1570.9,384.0 1586.0,1678.6 332.0,1689.0 333.9,1913.0 -0.0,1913.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1041.0,1493.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1938114,42.5031629]}},{"type":"Feature","properties":{"resourceCoords":[1033.0,385.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1943277,42.5051959]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Dodge, Iowa | 1916 | sanborn02662_007 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T19:46:56Z","modified":"2026-09-22T19:46:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1407.3,1404.0 1212.0,1658.7 1068.3,1746.5 780.1,1809.0 277.7,1790.5 273.8,123.9 1371.2,129.5 1378.8,1066.2 1348.8,1207.0 1285.0,1318.2 1332.2,1396.4 1407.3,1404.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154fm:g026621916:02662_1916-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19371322198079,42.50550545042726]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18977841992657,42.506062823414794]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.18888805192186,42.502598164654266]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19282285397608,42.50204079166673]}}]}}]}