{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03961_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chelsea, Michigan | 1884 | 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":"5"},{"label":"placed","value":"4"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p2__1 (tier 4, 42.31819,-84.02039 +/-348m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1884 | sanborn03961_001 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-22T05:20:58Z","modified":"2026-09-22T05:20:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"893.0,1927.0 893.0,653.0 1628.0,645.9 1628.0,0.0 124.3,0.0 122.8,1724.0 -0.0,1767.1 -0.0,1927.0 893.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[121.0,1227.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205062,42.3181313]}},{"type":"Feature","properties":{"resourceCoords":[121.0,143.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205391,42.3201262]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1884 | sanborn03961_001 p1 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"3572.0"},{"label":"split_canvas_y","value":"2583.6"},{"label":"split_canvas_w","value":"2940.0"},{"label":"split_canvas_h","value":"5124.4"}],"created":"2026-09-22T05:20:58Z","modified":"2026-09-22T05:20:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,645.9 893.0,653.0 893.0,1927.0 1628.0,1927.0 1628.0,645.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[988.9,1243.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0203938,42.3151642]}},{"type":"Feature","properties":{"resourceCoords":[988.9,737.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.020436,42.316086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1884 | sanborn03961_001 p2 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-22T05:20:58Z","modified":"2026-09-22T05:20:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"596.6,0.0 595.5,421.0 0.0,415.0 0.0,1433.5 617.4,1444.3 626.0,1927.0 1433.1,1927.0 1433.1,1796.8 1556.8,1753.3 1555.1,276.0 1156.1,227.4 1183.8,0.0 596.6,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1555.0,1253.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205062,42.3181313]}},{"type":"Feature","properties":{"resourceCoords":[1555.0,161.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205391,42.3201262]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1884 | sanborn03961_001 p2 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5734.0"},{"label":"split_canvas_w","value":"2504.0"},{"label":"split_canvas_h","value":"1974.0"}],"created":"2026-09-22T05:20:58Z","modified":"2026-09-22T05:20:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 405.0,1927.0 373.9,1669.8 620.9,1639.7 617.4,1444.3 0.0,1433.5 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611884:03961_1884-0002__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1433.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02138964051308,42.32089426369486]}},{"type":"Feature","properties":{"resourceCoords":[626.0,1433.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01985267904355,42.320769900263215]}},{"type":"Feature","properties":{"resourceCoords":[626.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01998528695115,42.319872282400524]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02152224842068,42.31999664583217]}},{"type":"Feature","properties":{"resourceCoords":[388.0,1813.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205391,42.3201262]}}]}}]}