{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02371_020.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Indianapolis, Indiana | 1950 | 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:gmd409m:g4094m:g4094im:g4094im_g02371195005A:02371_05A_1950-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Indianapolis, Indiana | 1950 | sanborn02371_020 p0","metadata":[{"label":"streets","value":"168"},{"label":"intersections","value":"1124"}],"created":"2026-09-22T08:44:23Z","modified":"2026-09-22T08:44:23Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094im:g4094im_g02371195005A:02371_05A_1950-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094im:g4094im_g02371195005A:02371_05A_1950-0000","type":"ImageService3","width":1676,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,-0.0 1676.0,0.0 1676.0,105.3 1676.0,185.3 1676.0,392.3 1676.0,608.4 1676.0,714.7 1676.0,758.0 1676.0,783.9 1676.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094im:g4094im_g02371195005A:02371_05A_1950-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1214.4,1391.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.1218837,39.8374751]}},{"type":"Feature","properties":{"resourceCoords":[751.9,1074.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.151263,39.852337]}}]}}]}