{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03674_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Amherst, Massachusetts | 1892 | 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":"17"},{"label":"placed","value":"4"},{"label":"unplaced","value":"13"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 16 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.37471,-72.51258 +/-745m); p1__2 (tier 4, 42.37471,-72.51258 +/-745m); p1__3 (tier 4, 42.37471,-72.51258 +/-745m); p1__4 (tier 4, 42.37471,-72.51258 +/-745m); p1__5 (tier 4, 42.37471,-72.51258 +/-745m); p1__6 (tier 4, 42.37471,-72.51258 +/-745m); p2__1 (tier 4, 42.37471,-72.51258 +/-745m); p3__1 (tier 2, 42.37582,-72.51963 +/-100m); p3__2 (tier 2, 42.37582,-72.51963 +/-100m); p3__3 (tier 2, 42.37582,-72.51963 +/-100m); p3__4 (tier 2, 42.37582,-72.51963 +/-100m); p3__5 (tier 2, 42.37582,-72.51963 +/-100m); p4 (tier 4, 42.37471,-72.51258 +/-745m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Amherst, Massachusetts | 1892 | sanborn03674_002 p2 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.23"},{"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":"2026-10-20T00:26:45Z","modified":"2026-10-20T00:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1550.2,995.9 1482.2,408.9 1519.0,218.0 1423.9,59.6 557.3,33.5 491.2,681.5 489.1,684.7 146.5,682.7 90.8,750.0 68.7,1207.8 563.1,1218.5 563.3,1219.5 567.3,1219.6 567.1,1246.7 645.4,1806.6 755.0,1872.8 1408.2,1874.7 1484.0,1823.4 1550.2,995.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[819.0,1877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.521331,42.373932]}},{"type":"Feature","properties":{"resourceCoords":[1478.0,919.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.5198495,42.375831]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Amherst, Massachusetts | 1892 | sanborn03674_002 p2 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.42"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4856.0"},{"label":"split_canvas_w","value":"2269.2"},{"label":"split_canvas_h","value":"2796.0"}],"created":"2026-10-20T00:26:45Z","modified":"2026-10-20T00:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"557.5,1836.3 524.6,1220.0 15.1,1234.9 16.2,1898.1 557.5,1836.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0002__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1214.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50894114407556,42.37645646941031]}},{"type":"Feature","properties":{"resourceCoords":[567.3,1214.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50752199418815,42.376350788503075]}},{"type":"Feature","properties":{"resourceCoords":[567.3,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50769819522704,42.37505717491427]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50911734511445,42.3751628558215]}},{"type":"Feature","properties":{"resourceCoords":[214.1,1565.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.508494,42.375767]}},{"type":"Feature","properties":{"resourceCoords":[214.1,1565.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.508494,42.375767]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Amherst, Massachusetts | 1892 | sanborn03674_002 p5 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.52"},{"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":"2026-10-20T00:26:45Z","modified":"2026-10-20T00:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1564.0,1841.4 1550.2,1135.8 1443.0,1029.8 1249.5,1025.9 1203.2,1026.4 1203.2,1024.9 1200.0,1024.9 1167.8,592.1 1198.4,407.2 1198.2,384.5 1202.1,384.5 1203.3,377.4 1519.7,379.4 1551.0,61.8 512.5,30.1 126.0,111.9 80.8,268.2 174.4,948.5 93.5,1312.2 76.9,1813.1 418.2,1887.6 908.5,1823.7 1564.0,1841.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[181.0,667.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.513283,42.374732]}},{"type":"Feature","properties":{"resourceCoords":[181.0,1539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.5133703,42.3731329]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Amherst, Massachusetts | 1892 | sanborn03674_002 p5 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.47"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4792.8"},{"label":"split_canvas_y","value":"1538.0"},{"label":"split_canvas_w","value":"1659.2"},{"label":"split_canvas_h","value":"2567.6"}],"created":"2026-10-20T00:26:45Z","modified":"2026-10-20T00:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1577.0,968.6 1576.9,414.7 1272.4,428.2 1239.5,781.1 1318.5,1007.0 1577.0,968.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036741892:03674_1892-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1198.2,384.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50952827893477,42.37295303202202]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,384.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50943232971566,42.37372167536142]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1026.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50782416838679,42.37361192383708]}},{"type":"Feature","properties":{"resourceCoords":[1198.2,1026.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.50792011760589,42.372843280497676]}},{"type":"Feature","properties":{"resourceCoords":[1263.2,638.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.508877,42.37303]}}]}}]}