{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03961_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chelsea, Michigan | 1918 | 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":"10"},{"label":"placed","value":"6"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 6, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.28427,-83.97255 +/-32089m); p1__4 (tier 4, 42.28427,-83.97255 +/-32089m); p2__2 (tier 1, 42.31310,-84.02590 +/-100m)"},{"label":"withheld","value":"p1__2 (37.5 km from the catalogue location)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0001__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 | 1918 | sanborn03961_005 p1 [3]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3289.2"},{"label":"split_canvas_w","value":"4024.4"},{"label":"split_canvas_h","value":"4418.8"}],"created":"2026-09-22T07:41:16Z","modified":"2026-09-22T07:41:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.2,1167.1 71.3,1927.0 802.8,1695.6 1003.8,1694.5 995.6,853.2 995.6,850.5 858.6,848.8 0.0,822.3 -0.0,1166.5 77.2,1167.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[72.0,1954.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205085,42.3188924]}},{"type":"Feature","properties":{"resourceCoords":[72.0,1343.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205391,42.3201262]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0002__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 | 1918 | sanborn03961_005 p2 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"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":"2026-09-22T07:41:16Z","modified":"2026-09-22T07:41:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1582.0,1777.0 1581.9,865.2 1628.0,835.5 1580.9,835.9 1580.0,0.0 0.0,-0.0 0.0,967.2 394.9,844.2 507.0,1150.5 0.0,1317.4 -0.0,1927.0 1159.3,1927.0 1582.0,1777.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1582.0,1777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0204867,42.3172167]}},{"type":"Feature","properties":{"resourceCoords":[1576.0,194.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0205391,42.3201262]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1918 | sanborn03961_005 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:41:16Z","modified":"2026-09-22T07:41:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"90.6,267.3 42.8,253.9 865.0,0.0 1628.0,0.0 1628.0,1795.0 1445.5,1796.3 1445.0,1838.3 36.8,1833.1 43.4,283.6 90.6,267.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02063013892054,42.31940419624763]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.0166706706414,42.31947337133143]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.01656071181438,42.31598348652786]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.02052018009351,42.31591431144406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chelsea, Michigan | 1918 | sanborn03961_005 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-22T07:41:16Z","modified":"2026-09-22T07:41:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 -0.0,331.1 1135.2,328.9 1265.6,282.4 1551.5,180.3 1587.8,1675.3 928.2,1709.9 939.5,1927.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[381.0,1294.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.023415,42.315123]}},{"type":"Feature","properties":{"resourceCoords":[381.0,589.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0234285,42.3164372]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005__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 | 1918 | sanborn03961_005 p5 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4018.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"3690.0"}],"created":"2026-09-22T07:41:16Z","modified":"2026-09-22T07:41:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,1927.0 1628.0,1118.8 689.1,1074.0 691.0,1012.7 0.0,1018.7 -0.0,1927.0 1628.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[210.0,1544.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0214463,42.3134168]}},{"type":"Feature","properties":{"resourceCoords":[661.0,1544.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0203613,42.313465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005__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 | 1918 | sanborn03961_005 p5 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"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":"4074.8"}],"created":"2026-09-22T07:41:16Z","modified":"2026-09-22T07:41:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1131.6,1008.8 1628.0,1004.5 1628.0,0.0 1438.5,0.0 1437.7,41.0 69.0,26.0 69.0,987.7 1131.6,1008.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039611918:03961_1918-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[69.0,987.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.0203617,42.3143049]}},{"type":"Feature","properties":{"resourceCoords":[69.0,26.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.020436,42.316086]}}]}}]}