{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03902_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Algonac, Michigan | 1907 | 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":"3"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.61971,-82.53077 +/-325m); p1__3 (tier 4, 42.61971,-82.53077 +/-325m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algonac, Michigan | 1907 | sanborn03902_003 p1 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"2135.6"},{"label":"split_canvas_y","value":"2764.0"},{"label":"split_canvas_w","value":"4376.4"},{"label":"split_canvas_h","value":"4944.0"}],"created":"2026-09-23T04:59:04Z","modified":"2026-09-23T04:59:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,1927.0 1628.0,697.7 539.9,691.0 533.9,1927.0 1628.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1026.5,715.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.5292374,42.6221797]}},{"type":"Feature","properties":{"resourceCoords":[585.9,715.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.5298062,42.6214802]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algonac, Michigan | 1907 | sanborn03902_003 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-23T04:59:04Z","modified":"2026-09-23T04:59:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,0.0 1628.0,1927.0 0.0,1927.0 0.0,0.0 1628.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1398.0,1002.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.5303803,42.6207747]}},{"type":"Feature","properties":{"resourceCoords":[516.0,59.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.5336377,42.6202904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algonac, Michigan | 1907 | sanborn03902_003 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-23T04:59:04Z","modified":"2026-09-23T04:59:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1472.1,0.0 1421.6,1927.0 0.0,1927.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114am:g039021907:03902_1907-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[660.0,1020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.533241,42.617241]}},{"type":"Feature","properties":{"resourceCoords":[1550.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.5342078,42.6195801]}}]}}]}