{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01146_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mystic, Connecticut | 1903 | 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:gmd378m:g3784m:g3784mm:g3784mm_g011461903:01146_1903-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mystic, Connecticut | 1903 | sanborn01146_003 p1 [2]","metadata":[{"label":"streets","value":"28"},{"label":"intersections","value":"43"},{"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":"5133.1"}],"created":"2026-09-23T14:23:43Z","modified":"2026-09-23T14:23:43Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784mm:g3784mm_g011461903:01146_1903-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784mm:g3784mm_g011461903:01146_1903-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"14.5,5133.1 3649.9,5122.6 3654.3,3540.4 5524.1,3537.0 5548.4,4953.3 6878.4,4961.2 6878.4,0.0 5462.7,0.0 4345.4,0.0 -0.0,-0.0 -0.0,5133.1 14.5,5133.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784mm:g3784mm_g011461903:01146_1903-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2401.6,2800.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.9670898,41.3535801]}},{"type":"Feature","properties":{"resourceCoords":[989.6,2824.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.974941,41.3528726]}}]}}]}