{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03772_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Lynn, Massachusetts | 1938 | key map | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03772193802:03772_02_1938-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lynn, Massachusetts | 1938 | sanborn03772_005 p0","metadata":[{"label":"streets","value":"301"},{"label":"intersections","value":"233"}],"created":"2026-09-20T23:23:21Z","modified":"2026-09-20T23:23:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03772193802:03772_02_1938-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03772193802:03772_02_1938-0000","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1949.0 0.0,0.0 1636.0,0.0 1636.0,1949.0 0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03772193802:03772_02_1938-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1252.2,843.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.942886,42.478826]}},{"type":"Feature","properties":{"resourceCoords":[889.4,910.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9641189,42.4759817]}}]}}]}