{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03961_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chelsea, Michigan | 1899 | 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":"5"},{"label":"placed","value":"5"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef 3, georef-snap 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__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 | 1899 | sanborn03961_003 p1 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2089.2"},{"label":"split_canvas_h","value":"2280.0"}],"created":"2026-09-23T17:03:07Z","modified":"2026-09-23T17:03:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.2,472.2 296.2,570.0 522.3,570.0 515.0,0.0 -0.0,-0.0 -0.0,560.1 293.2,472.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[293.2,472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205391,42.3201262]}},{"type":"Feature","properties":{"resourceCoords":[293.2,122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205318,42.320926]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__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 | 1899 | sanborn03961_003 p1 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2060.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4452.0"},{"label":"split_canvas_h","value":"2280.0"}],"created":"2026-09-23T17:03:07Z","modified":"2026-09-23T17:03:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,570.0 1628.0,0.0 515.0,-0.0 522.3,570.0 1628.0,570.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[515.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01590222958454,42.31940804135308]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01316468934021,42.32004687347727]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,570.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01272301667585,42.31901023799995]}},{"type":"Feature","properties":{"resourceCoords":[515.0,570.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01546055692017,42.31837140587576]}},{"type":"Feature","properties":{"resourceCoords":[784.8,471.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.014875,42.318706]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__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 | 1899 | sanborn03961_003 p1 [3]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2280.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"5428.0"}],"created":"2026-09-23T17:03:07Z","modified":"2026-09-23T17:03:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,570.0 1437.5,570.0 1502.9,754.0 276.9,759.5 -0.0,848.3 -0.0,1927.0 1628.0,1927.0 1628.0,570.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1570.0,1840.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.016974,42.315193]}},{"type":"Feature","properties":{"resourceCoords":[249.0,1840.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0203938,42.3151642]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1899 | sanborn03961_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:03:07Z","modified":"2026-09-23T17:03:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1587.5,1927.0 1575.2,1472.3 1379.2,1477.6 1451.6,1664.0 137.5,1714.8 97.1,280.7 374.4,278.2 371.9,0.0 1628.0,0.0 1628.0,1927.0 1587.5,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02076471838329,42.32043110015589]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01667168858474,42.320383210797985]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01674781325323,42.31677565435731]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02084084305179,42.316823543715216]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1899 | sanborn03961_003 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:03:07Z","modified":"2026-09-23T17:03:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1347.0,1927.0 -0.0,1927.0 0.0,-0.0 1157.5,0.0 1162.1,306.7 1515.0,195.7 1569.0,1727.0 1524.6,1744.2 1341.5,1815.3 1347.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611899:03961_1899-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.024390894662,42.320560467052886]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02024021046695,42.32049293844452]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02034755372183,42.31683457069834]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02449823791689,42.31690209930671]}}]}}]}