{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01833_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Dwight, Illinois | 1907 | 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://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018331907:01833_1907-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dwight, Illinois | 1907 | sanborn01833_004 p1 [2]","metadata":[{"label":"streets","value":"22"},{"label":"intersections","value":"43"},{"label":"split_canvas_x","value":"3297.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3580.8"},{"label":"split_canvas_h","value":"4607.1"}],"created":"2026-09-22T17:27:29Z","modified":"2026-09-22T17:27:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018331907:01833_1907-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018331907:01833_1907-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3298.7,4607.1 6878.4,4593.2 6878.4,0.0 6085.3,0.0 5275.0,0.0 3297.8,0.0 3297.6,4607.1 3298.7,4607.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018331907:01833_1907-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4108.2,1251.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.4319698,41.0950791]}},{"type":"Feature","properties":{"resourceCoords":[5370.7,1649.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.4235492,41.0930298]}}]}}]}