{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05793_022.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Buffalo, New-York | 1940 | key map | 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"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g05793194010:05793_10_1940-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Buffalo, New-York | 1940 | sanborn05793_022 p0","metadata":[{"label":"streets","value":"144"},{"label":"intersections","value":"182"}],"created":"2026-09-21T20:58:48Z","modified":"2026-09-21T20:58:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g05793194010:05793_10_1940-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g05793194010:05793_10_1940-0000","type":"ImageService3","width":1598,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1920.0 -0.0,-0.0 1598.0,0.0 1598.0,1920.0 -0.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g05793194010:05793_10_1940-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[805.8,800.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.8312385,42.869354]}},{"type":"Feature","properties":{"resourceCoords":[1145.8,1439.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.8123478,42.841014]}}]}}]}