{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03684_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ayer, Massachusetts | 1892 | 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":"6"},{"label":"placed","value":"3"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef-snap 2, georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 42.55927,-71.58903 +/-226m); p1__3 (tier 4, 42.55927,-71.58903 +/-226m); p3__1 (tier 1, 42.55757,-71.58512 +/-106m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1892 | sanborn03684_002 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"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":"2026-10-19T23:54:17Z","modified":"2026-10-19T23:54:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"60.8,341.2 44.0,803.1 139.3,983.2 152.7,1858.2 442.2,1892.3 846.8,1831.6 1003.9,1548.5 1012.5,1541.4 1012.5,1521.7 1036.8,1521.6 1262.8,1336.9 1522.8,1291.7 1484.2,952.0 1568.6,611.5 1416.1,525.8 1011.1,521.5 1011.0,519.5 1005.6,519.5 1004.4,386.6 994.2,181.7 1002.6,183.8 1002.4,162.4 1002.3,157.8 565.9,20.5 518.4,7.6 490.4,48.6 398.3,348.1 349.4,328.9 368.9,249.8 296.1,280.2 166.1,322.2 60.8,341.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[604.0,1342.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.59276242028265,42.5595895795223]}},{"type":"Feature","properties":{"resourceCoords":[196.0,1342.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.59275511029533,42.56035060438817]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1892 | sanborn03684_002 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:54:17Z","modified":"2026-10-19T23:54:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.7,1912.0 131.4,1912.0 83.8,106.7 136.1,109.3 142.8,190.1 201.9,138.3 311.2,57.3 404.6,5.9 415.1,41.5 518.2,97.4 836.5,25.9 1160.3,59.0 1236.1,124.3 1265.2,76.2 1525.2,100.9 1518.9,148.8 1604.8,309.7 1563.5,1870.7 262.5,1854.1 162.7,1896.2 162.1,1912.0 155.7,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[968.0,445.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.58869629161224,42.561319215213]}},{"type":"Feature","properties":{"resourceCoords":[139.0,656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.58887568684601,42.55972281830051]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1892 | sanborn03684_002 p3 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.89"},{"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":"2026-10-19T23:54:17Z","modified":"2026-10-19T23:54:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"117.9,60.6 60.9,93.3 39.0,286.7 91.5,1031.5 539.5,1070.5 593.4,1070.8 593.4,1075.2 597.7,1075.6 656.6,1840.8 721.2,1880.5 1555.7,1852.2 1582.6,1479.5 1582.7,1478.5 1552.5,1477.6 1558.2,1.0 1557.8,1.0 1543.5,46.6 1495.0,48.0 1044.2,43.4 1036.6,18.9 117.9,60.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841892:03684_1892-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[779.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.58685,42.557636]}},{"type":"Feature","properties":{"resourceCoords":[823.0,947.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.587722,42.557923]}}]}}]}