{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn04009_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Flint, Michigan | 1898 | 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:gmd411m:g4114m:g4114fm:g040091898:04009_1898-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Flint, Michigan | 1898 | sanborn04009_003 p1","metadata":[{"label":"streets","value":"63"},{"label":"intersections","value":"161"}],"created":"2026-09-23T02:51:34Z","modified":"2026-09-23T02:51:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114fm:g040091898:04009_1898-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114fm:g040091898:04009_1898-0001","type":"ImageService3","width":1631,"height":1921},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,596.9 0.0,141.5 -0.0,86.3 0.0,62.5 0.0,-0.0 285.8,-0.0 285.8,-0.0 468.7,-0.0 833.5,-0.0 1015.7,-0.0 1054.2,-0.0 1631.0,-0.0 1631.0,1921.0 1448.5,1921.0 1299.4,1921.0 1256.5,1921.0 779.2,1921.0 698.8,1921.0 -0.0,1921.0 -0.0,833.6 -0.0,596.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114fm:g040091898:04009_1898-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[269.3,1187.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.7052166,43.007197]}},{"type":"Feature","properties":{"resourceCoords":[1043.1,1195.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.6827711,43.016985]}}]}}]}