{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01827_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Dixon, Illinois | 1891 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"16"},{"label":"placed","value":"14"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 9, georef-snap 5"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"1 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 41.84753,-89.49006 +/-422m); p11__4 (tier 1, 41.84525,-89.47498 +/-100m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0010/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,194.4 6280.9,455.6 6299.7,0.0 6452.0,0.0 6452.0,7652.0 -0.0,7652.0 -0.0,194.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49079474940051,41.83546284620716]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48704374500308,41.83651683811902]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48537778965468,41.833178866039766]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.4891287940521,41.832124874127906]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p11 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4890.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4890.4,6501.9 4890.0,5040.4 4889.6,3980.8 3727.6,3981.2 3727.6,4278.0 1832.0,4307.2 1801.2,1322.4 3728.8,1323.2 3729.5,204.6 1960.4,-0.0 -0.0,-0.0 -0.0,6624.9 4696.3,6637.0 4695.7,6502.0 4890.4,6501.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4698.8,7208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4784005,41.8436199]}},{"type":"Feature","properties":{"resourceCoords":[4698.8,252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4746899,41.8445146]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p11 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"3727.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2724.4"},{"label":"split_canvas_h","value":"5040.4"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,5040.4 6452.0,-0.0 3729.6,0.0 3728.8,1323.2 3727.6,3981.2 4889.6,3980.8 4890.0,5040.4 6452.0,5040.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4011.2,3484.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4845117,41.8379413]}},{"type":"Feature","properties":{"resourceCoords":[4011.2,1300.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4832182,41.8382774]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p11 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"1801.2"},{"label":"split_canvas_y","value":"1322.4"},{"label":"split_canvas_w","value":"1927.6"},{"label":"split_canvas_h","value":"2984.8"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__3/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3192.3,3981.4 3183.4,3923.3 3727.7,3852.8 3728.8,1323.2 1801.2,1322.4 1829.0,4013.3 3192.3,3981.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0011__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1801.2,1322.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47180339391346,41.84622541685714]}},{"type":"Feature","properties":{"resourceCoords":[3728.8,1322.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47136006681463,41.84447477937378]}},{"type":"Feature","properties":{"resourceCoords":[3728.8,4307.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47499806050392,41.8439623834247]}},{"type":"Feature","properties":{"resourceCoords":[1801.2,4307.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47544138760276,41.84571302090806]}},{"type":"Feature","properties":{"resourceCoords":[1945.2,3991.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4750211,41.8456368]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p12","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"14"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0012/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0012/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 6452.0,0.0 6452.0,7652.0 -0.0,7652.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2184.0,4592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4847531,41.8484111]}},{"type":"Feature","properties":{"resourceCoords":[2184.0,300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4855866,41.8502878]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p13","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0013/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0013/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 -0.0,7652.0 -0.0,0.0 6452.0,0.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49586847411872,41.834485674425174]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49209334942938,41.835465465263106]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.4905352106683,41.83212643966538]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49431033535764,41.83114664882745]}},{"type":"Feature","properties":{"resourceCoords":[5476.0,832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.492495,41.8349542]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7237.4 0.0,0.0 6049.4,-0.0 6124.6,7243.8 -0.0,7237.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47923030130356,41.8463251819717]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47802191960486,41.84351898262825]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48245813366148,41.842443826908955]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48366651536018,41.84525002625241]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3819.6,7054.3 3820.5,7652.0 -0.0,7652.0 -0.0,433.5 5990.7,463.7 5976.7,7027.6 3819.6,7054.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48316190675091,41.845349673151276]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48192181762792,41.842507250860514]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48641522622557,41.8414038665814]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48765531534856,41.844246288872164]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"99.1,7225.3 50.0,-0.0 6452.0,-0.0 6417.4,7222.3 99.1,7225.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47803507886347,41.84373388036996]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.47678966013497,41.84087530639974]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.4813084867501,41.83976715179776]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.4825539054786,41.84262572576798]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0005/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4330.3,7652.0 4338.0,7061.9 -0.0,7068.1 111.3,506.0 6443.4,499.3 6452.0,7652.0 4330.3,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48200596674882,41.84276580366619]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48076545817135,41.839912927002004]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.4852752105351,41.83880912474297]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48651571911256,41.84166200140716]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0006/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"781.7,5320.5 762.6,1055.6 6080.8,1068.7 6032.2,7477.9 5443.2,7467.3 5441.5,7652.0 1045.6,7652.0 1054.9,6354.5 -0.0,6346.9 -0.0,5326.7 781.7,5320.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1728.0,5316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4882964,41.8401472]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4891388,41.8420267]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0007/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"143.5,7652.0 362.4,6180.7 428.6,0.0 6452.0,0.0 6452.0,6232.9 5679.5,6235.7 5675.0,7243.9 3754.2,7221.5 3750.0,7652.0 143.5,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5316.0,6236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4895292,41.8398343]}},{"type":"Feature","properties":{"resourceCoords":[388.0,1948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4933293,41.8409958]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p8","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0008/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0008/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 -0.0,0.0 6070.6,0.0 6095.8,6285.5 5912.9,7652.0 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1792.0,6312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4950129,41.8384949]}},{"type":"Feature","properties":{"resourceCoords":[1792.0,2020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4958261,41.8403729]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dixon, Illinois | 1891 | sanborn01827_002 p9","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"}],"created":"2026-09-23T11:13:04Z","modified":"2026-09-23T11:13:04Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0009/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,475.8 3455.0,435.5 3454.1,0.0 6452.0,0.0 6452.0,7500.2 169.1,7523.9 174.4,7652.0 -0.0,7652.0 -0.0,475.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018271891:01827_1891-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1588.0,5368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4903292,41.8365309]}},{"type":"Feature","properties":{"resourceCoords":[5004.0,2880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4887897,41.8381166]}}]}}]}