{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04237_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Williamston, Michigan | 1922 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"7"},{"label":"placed","value":"3"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef-snap 2, georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 42.70476,-84.28922 +/-103m); p1__2 (tier 1, 42.68869,-84.28115 +/-118m); p1__3 (tier 1, 42.68446,-84.28097 +/-221m); p1__4 (tier 4, 42.68890,-84.28311 +/-176m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0001__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williamston, Michigan | 1922 | sanborn04237_004 p1 [5]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.82"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2830.4"},{"label":"split_canvas_y","value":"5738.0"},{"label":"split_canvas_w","value":"2046.4"},{"label":"split_canvas_h","value":"1970.0"}],"created":"2026-10-20T03:31:20Z","modified":"2026-10-20T03:31:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0001__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"822.4,1926.0 876.7,1926.0 881.9,1822.2 885.0,1772.8 936.7,1774.1 1149.8,1862.5 1217.6,1816.2 1212.0,1806.9 1192.7,1434.7 727.7,1437.0 711.8,1798.2 708.5,1808.0 822.4,1926.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0001__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[707.6,1434.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.2837779155724,42.69061685265745]}},{"type":"Feature","properties":{"resourceCoords":[1219.2,1434.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.28248510431358,42.690715983586905]}},{"type":"Feature","properties":{"resourceCoords":[1219.2,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.2823552636393,42.68980084375584]}},{"type":"Feature","properties":{"resourceCoords":[707.6,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-84.28364807489812,42.689701712826384]}},{"type":"Feature","properties":{"resourceCoords":[886.5,1753.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.2832418,42.6900585]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williamston, Michigan | 1922 | sanborn04237_004 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:31:20Z","modified":"2026-10-20T03:31:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1325.7,1908.9 53.7,1878.0 61.4,107.5 526.2,17.0 1368.7,16.0 1502.7,138.6 1557.1,135.2 1557.1,141.8 1558.5,189.6 1558.5,191.9 1565.8,482.0 1577.2,1125.2 1581.0,1469.1 1582.9,1896.4 1325.7,1908.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[739.0,1157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.2851661077682,42.687788828076975]}},{"type":"Feature","properties":{"resourceCoords":[1558.0,930.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.28313578726677,42.68827002534194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williamston, Michigan | 1922 | sanborn04237_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:31:20Z","modified":"2026-10-20T03:31:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"98.6,212.1 95.3,501.5 83.3,1143.2 74.6,1486.2 61.0,1912.2 1583.7,1893.4 1612.6,586.1 1562.2,106.6 1181.4,18.3 453.6,25.7 373.2,83.6 158.4,1.0 103.6,1.0 101.8,50.0 99.0,162.1 98.6,212.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114wm:g042371922:04237_1922-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1207.0,1403.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.28019766385505,42.687594380776765]}},{"type":"Feature","properties":{"resourceCoords":[89.0,950.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.2830908955628,42.68826867476161]}}]}}]}