{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05335_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Goffstown, New-Hampshire | 1941 | key map | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744gm:g3744gm_g053351941:05335_1941-0001a__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Goffstown, New-Hampshire | 1941 | sanborn05335_005 p1a [2]","metadata":[{"label":"streets","value":"19"},{"label":"intersections","value":"20"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"7001.9"},{"label":"split_canvas_h","value":"4620.4"}],"created":"2026-09-22T06:43:36Z","modified":"2026-09-22T06:43:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744gm:g3744gm_g053351941:05335_1941-0001a__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744gm:g3744gm_g053351941:05335_1941-0001a","type":"ImageService3","width":1644,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1644,627.4 1644,622.8 1644,552.8 1644,0.0 -0.0,-0.0 0.0,1138.1 1644,1155.1 1644,1155.1 1644,627.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744gm:g3744gm_g053351941:05335_1941-0001a__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[348.8,361.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.6051488,43.0209926]}},{"type":"Feature","properties":{"resourceCoords":[476.1,335.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.6015766,43.0210318]}}]}}]}