{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn02319_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Dunkirk, Indiana | 1900 | 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://tile.loc.gov/image-services/iiif/service:gmd:gmd409m:g4094m:g4094dm:g4094dm_g023191900:02319_1900-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dunkirk, Indiana | 1900 | sanborn02319_003 p1 [1]","metadata":[{"label":"streets","value":"26"},{"label":"intersections","value":"65"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"4278.9"}],"created":"2026-09-23T15:41:11Z","modified":"2026-09-23T15:41:11Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd409m:g4094m:g4094dm:g4094dm_g023191900:02319_1900-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd409m:g4094m:g4094dm:g4094dm_g023191900:02319_1900-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6878.4,0.0 5027.7,0.0 4119.4,0.0 2307.3,0.0 0.0,0.0 0.0,3747.1 2924.5,3759.0 2927.2,4268.3 3347.7,4269.5 6871.5,4278.9 6878.4,4278.9 6878.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd409m:g4094m:g4094dm:g4094dm_g023191900:02319_1900-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1212.5,1395.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2120007,40.3739686]}},{"type":"Feature","properties":{"resourceCoords":[483.1,1632.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2162126,40.3728533]}}]}}]}