{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03587_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chesapeake City, Maryland | 1907 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"11"},{"label":"placed","value":"4"},{"label":"unplaced","value":"7"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 39.52911,-75.80998 +/-416m); p1__2 (tier 4, 39.52911,-75.80998 +/-416m); p1__3 (tier 4, 39.52911,-75.80998 +/-416m); p2__2 (tier 2, 39.52971,-75.80659 +/-100m); p3__2 (tier 2, 39.53008,-75.80901 +/-145m); p3__3 (tier 2, 39.53008,-75.80901 +/-145m); p4__1 (tier 4, 39.52911,-75.80998 +/-416m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chesapeake City, Maryland | 1907 | sanborn03587_002 p1 [4]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.71"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3803.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3848.4"}],"created":"2026-10-19T19:39:05Z","modified":"2026-10-19T19:39:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"640.1,1908.0 634.2,1894.2 623.1,1867.8 1522.6,1859.5 1554.2,1839.2 1503.1,1200.5 1395.6,1072.2 1211.1,987.3 432.4,981.1 129.5,1095.9 116.1,1893.3 640.1,1908.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1171.0,1833.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.8105952,39.530532]}},{"type":"Feature","properties":{"resourceCoords":[796.0,1833.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.8109678,39.5299061]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chesapeake City, Maryland | 1907 | sanborn03587_002 p2 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.11"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-19T19:39:05Z","modified":"2026-10-19T19:39:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1699.1 1565.8,1691.0 1560.5,1251.6 1468.0,963.1 1141.2,973.2 1088.4,931.0 1078.0,931.0 1078.0,922.6 1068.3,914.9 1048.6,216.0 1019.4,82.3 956.0,56.0 341.6,68.0 264.7,288.7 328.4,398.3 284.2,647.5 190.6,706.5 247.0,814.7 219.8,968.6 123.5,1042.3 34.9,1457.4 32.2,1600.5 133.8,1709.3 133.2,1779.4 176.0,1650.0 119.0,1638.6 124.0,1614.3 1612.0,1757.2 1612.0,1705.8 1612.0,1699.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[176.0,1005.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.8056335,39.5310715]}},{"type":"Feature","properties":{"resourceCoords":[176.0,1650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.8071259,39.5308675]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chesapeake City, Maryland | 1907 | sanborn03587_002 p3 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.01"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-19T19:39:05Z","modified":"2026-10-19T19:39:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"609.6,1633.7 533.1,1060.8 561.5,736.7 631.1,689.2 986.3,677.9 1228.3,566.8 1312.5,570.5 1321.2,641.4 1508.7,641.8 1567.8,265.0 1535.3,59.2 1279.0,67.4 1289.4,116.7 1.0,261.1 1.0,282.7 50.5,282.2 37.2,399.8 40.7,417.2 50.5,1127.9 33.5,1406.4 1.0,1425.8 1.0,1426.8 708.0,1716.8 708.0,1691.6 708.0,1678.4 609.6,1633.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[556.0,1686.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.8109678,39.5299061]}},{"type":"Feature","properties":{"resourceCoords":[252.0,1558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.8105952,39.530532]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chesapeake City, Maryland | 1907 | sanborn03587_002 p4 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.76"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-19T19:39:05Z","modified":"2026-10-19T19:39:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1467.9,1577.1 1574.9,1372.9 1585.0,428.7 1546.0,181.7 1422.3,99.1 1083.7,26.4 858.0,46.1 674.9,241.5 369.2,226.7 141.5,394.4 131.2,501.1 57.9,538.4 87.7,542.7 92.5,580.0 54.0,619.9 141.2,716.0 73.5,952.8 76.6,1310.4 564.7,1354.5 566.5,1361.8 574.0,1361.8 574.0,1393.2 687.9,1866.0 779.1,1880.7 1163.0,1863.6 1463.9,1765.8 1467.9,1577.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035871907:03587_1907-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[668.0,1118.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.814335,39.5268589]}},{"type":"Feature","properties":{"resourceCoords":[855.0,591.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.8131406,39.5273538]}}]}}]}