{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01739_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Blue Mound, Illinois | 1905 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"4"},{"label":"placed","value":"3"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 39.69962,-89.12225 +/-202m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blue Mound, Illinois | 1905 | sanborn01739_002 p1 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"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":"2026-09-21T19:47:52Z","modified":"2026-09-21T19:47:52Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 6452.0,6776.2 6067.8,6759.4 6056.8,1927.3 5910.2,1737.5 5639.3,2010.7 5727.4,0.0 1697.2,0.0 1705.6,3108.4 0.0,3113.6 -0.0,7652.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3808.0,6096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.1240778,39.699196]}},{"type":"Feature","properties":{"resourceCoords":[4920.0,2736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.1234341,39.7007535]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blue Mound, Illinois | 1905 | sanborn01739_002 p2 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"11"},{"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":"2026-09-21T19:47:52Z","modified":"2026-09-21T19:47:52Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 6452.0,1806.0 2981.2,1793.6 2981.6,0.0 -0.0,-0.0 -0.0,2948.2 257.6,2664.8 411.5,2847.1 633.0,7652.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2688.0,2384.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.1213749,39.7013142]}},{"type":"Feature","properties":{"resourceCoords":[472.0,4696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.122756,39.700275]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blue Mound, Illinois | 1905 | sanborn01739_002 p2 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"2981.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3470.8"},{"label":"split_canvas_h","value":"1806.0"}],"created":"2026-09-21T19:47:52Z","modified":"2026-09-21T19:47:52Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,0.0 2981.6,0.0 2981.2,1793.6 6452.0,1806.0 6452.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104bm:g017391905:01739_1905-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[2981.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.12069292847589,39.69878882076675]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.12066290086327,39.69718308008248]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,1806.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.12175204092216,39.69717107542141]}},{"type":"Feature","properties":{"resourceCoords":[2981.2,1806.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.12178206853478,39.69877681610568]}},{"type":"Feature","properties":{"resourceCoords":[4368.7,947.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.121252,39.6981406]}},{"type":"Feature","properties":{"resourceCoords":[4368.7,947.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.121252,39.6981406]}}]}}]}