{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02251_002.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Anderson, Indiana | 1890 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094am:g4094am_g022511890:02251_1890-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Anderson, Indiana | 1890 | sanborn02251_002 p1","metadata":[{"label":"streets","value":"41"},{"label":"intersections","value":"302"}],"created":"2026-09-23T01:08:54Z","modified":"2026-09-23T01:08:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094am:g4094am_g022511890:02251_1890-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094am:g4094am_g022511890:02251_1890-0001","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:gmd409m:g4094m:g4094am:g4094am_g022511890:02251_1890-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[591.4,1096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.6805311,40.1060988]}},{"type":"Feature","properties":{"resourceCoords":[176.6,1665.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.693117,40.093421]}}]}}]}