{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03742_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hanover, Massachusetts | 1917 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"12"},{"label":"placed","value":"2"},{"label":"unplaced","value":"10"},{"label":"fit sources","value":"georef 2, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p2__1 (tier 1, 42.10945,-70.80786 +/-100m); p2__2 (tier 1, 42.11050,-70.81419 +/-268m); p2__3 (tier 1, 42.11011,-70.80796 +/-104m); p3__2 (tier 1, 42.11513,-70.81552 +/-100m); p4 (tier 4, 42.12096,-70.83684 +/-3967m); p5__1 (tier 4, 42.12096,-70.83684 +/-3967m); p5__2 (tier 4, 42.12096,-70.83684 +/-3967m); p6__1 (tier 4, 42.12096,-70.83684 +/-3967m); p6__2 (tier 4, 42.12096,-70.83684 +/-3967m)"},{"label":"withheld","value":"p3__3 (6.0 km from the catalogue location)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hanover, Massachusetts | 1917 | sanborn03742_001 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T21:17:47Z","modified":"2026-09-21T21:17:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,-0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.81604954690935,42.11592974575311]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.81213247116051,42.11622230874628]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.81166800441953,42.112751841540046]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.81558508016838,42.11245927854687]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hanover, Massachusetts | 1917 | sanborn03742_001 p3 [1]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4518.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-21T21:17:47Z","modified":"2026-09-21T21:17:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 0.0,1523.0 -0.0,1913.0 758.6,1913.0 878.5,1565.4 1036.2,1461.2 1129.7,1200.2 1125.7,648.5 1121.3,0.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037421917:03742_1917-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.8293666343323,42.10466282062359]}},{"type":"Feature","properties":{"resourceCoords":[1129.7,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.82410936015329,42.103283547570456]}},{"type":"Feature","properties":{"resourceCoords":[1129.7,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.82725015017348,42.09666679294963]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.8325074243525,42.09804606600276]}},{"type":"Feature","properties":{"resourceCoords":[1420.6,-133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.822785,42.102908]}},{"type":"Feature","properties":{"resourceCoords":[1420.6,-133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8225379,42.1033898]}}]}}]}