{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03692_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Blackstone, Massachusetts | 1903 | 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":"14"},{"label":"placed","value":"5"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 2, georef-snap 2, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p2__2 (tier 1, 42.01566,-71.54711 +/-214m); p5__1 (tier 1, 42.01903,-71.53566 +/-216m); p6__1 (tier 4, 42.01707,-71.54284 +/-534m); p6__2 (tier 4, 42.01707,-71.54284 +/-534m); p6__3 (tier 1, 42.07901,-72.08546 +/-209m); p6__4 (tier 4, 42.01707,-71.54284 +/-534m); p7 (tier 4, 42.01707,-71.54284 +/-534m); p8__1 (tier 1, 42.01665,-71.54045 +/-272m); p8__2 (tier 1, 42.08123,-72.03971 +/-182m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb00001i__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blackstone, Massachusetts | 1903 | sanborn03692_004 p1i [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.79"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3076.0"},{"label":"split_canvas_w","value":"6664.0"},{"label":"split_canvas_h","value":"4816.0"}],"created":"2026-10-19T14:52:22Z","modified":"2026-10-19T14:52:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb00001i__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb00001i","type":"ImageService3","width":1666,"height":1973},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"31.8,1882.6 87.9,1878.3 129.5,1855.2 1006.6,1912.4 1005.2,1853.2 1357.3,1842.5 1528.3,1592.4 1471.9,1545.9 1665.0,1542.3 1665.0,1535.0 1665.0,1514.0 1602.9,1515.1 1551.5,1226.7 1613.0,1155.0 1566.8,1020.1 1600.9,941.6 1553.1,813.6 1466.0,784.6 1030.8,784.9 839.2,1028.7 762.1,1132.6 757.6,1132.6 754.5,1136.6 61.6,1170.4 68.6,1578.5 59.0,1566.8 27.6,1616.0 31.8,1882.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb00001i__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1345.0,1289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.54348,42.0183585]}},{"type":"Feature","properties":{"resourceCoords":[656.0,1862.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.544847,42.016973]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000020__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blackstone, Massachusetts | 1903 | sanborn03692_004 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4069.2"},{"label":"split_canvas_w","value":"6684.0"},{"label":"split_canvas_h","value":"3818.8"}],"created":"2026-10-19T14:52:22Z","modified":"2026-10-19T14:52:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000020__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000020","type":"ImageService3","width":1671,"height":1972},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"143.7,1048.0 144.2,1059.9 79.2,1086.2 28.6,1305.0 77.7,1970.8 1139.9,1932.1 1114.3,1900.5 1137.5,1880.0 1356.7,1880.5 1487.0,1936.7 1494.5,1880.6 1622.4,1863.6 1641.2,1600.2 1644.3,1600.1 1576.1,1422.6 1575.2,1369.1 855.0,1159.3 853.2,1087.4 587.4,1087.9 538.8,1056.0 550.6,1046.5 143.7,1048.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000020__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1208.0,1803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.54795392066404,42.015633823751365]}},{"type":"Feature","properties":{"resourceCoords":[-18.0,1803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.54876421177563,42.01791321392912]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blackstone, Massachusetts | 1903 | sanborn03692_004 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.29"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:52:22Z","modified":"2026-10-19T14:52:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000030","type":"ImageService3","width":1671,"height":1968},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1582.0,67.2 1604.1,391.6 1631.5,412.9 1650.5,390.1 1668.8,1949.6 981.8,1961.2 916.0,1783.9 915.8,1730.8 202.8,1514.1 201.8,1442.6 198.9,1386.8 177.1,1345.1 255.7,478.1 197.0,478.0 195.3,125.0 583.9,128.4 581.5,145.1 1495.1,94.8 1496.5,36.9 1582.0,67.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[197.0,824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.544847,42.016973]}},{"type":"Feature","properties":{"resourceCoords":[197.0,478.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5439782,42.0171515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blackstone, Massachusetts | 1903 | sanborn03692_004 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.54"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:52:22Z","modified":"2026-10-19T14:52:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000040","type":"ImageService3","width":1670,"height":1969},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1669.0,1756.8 1663.1,1754.7 1665.2,1.0 1663.0,1.0 1633.8,7.0 1630.7,54.7 1608.0,67.4 1022.3,32.0 1025.2,89.8 685.2,105.5 276.3,121.0 277.8,149.1 11.2,15.3 10.5,1.0 9.4,1.0 1.0,8.8 1.0,1542.7 29.2,1543.2 29.3,1740.2 77.8,1683.5 330.0,1862.5 329.9,1858.2 730.4,1858.7 728.0,1875.9 1669.0,1816.8 1669.0,1756.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[316.0,328.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.53936528966646,42.01810687402088]}},{"type":"Feature","properties":{"resourceCoords":[316.0,112.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.53883781033355,42.018212000580654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000050__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blackstone, Massachusetts | 1903 | sanborn03692_004 p5 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.62"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2672.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3980.0"},{"label":"split_canvas_h","value":"7880.0"}],"created":"2026-10-19T14:52:22Z","modified":"2026-10-19T14:52:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000050__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000050","type":"ImageService3","width":1663,"height":1970},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1662.0,1844.5 1662.0,1844.0 1662.0,1787.3 1606.9,1781.4 1575.8,1577.1 1609.1,1140.8 1627.7,1119.4 1656.1,1140.1 1661.3,498.1 1644.0,552.4 1640.6,683.9 1619.1,707.0 1593.9,688.1 1568.0,558.0 1618.8,492.0 1553.0,396.2 1588.7,168.4 1421.9,40.3 938.7,42.6 847.2,73.1 864.8,98.2 843.1,127.1 791.9,130.2 795.8,303.4 707.9,462.1 693.5,1272.3 792.5,1543.1 775.5,1584.8 743.2,1597.2 716.0,1564.2 744.9,1714.8 668.0,1709.9 668.0,1725.1 923.7,1869.5 923.7,1841.6 1326.8,1844.8 1662.0,1844.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g03692004:sb000050__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.53461120561286,42.01981545170137]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.53383766038822,42.018007197908176]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1970.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.53862285853859,42.016861338172966]}},{"type":"Feature","properties":{"resourceCoords":[668.0,1970.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.53939640376323,42.01866959196616]}}]}}]}