{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn06572_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Williston, North-Dakota | 1916 | 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:gmd417m:g4174m:g4174wm:g065721916:06572_1916-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williston, North-Dakota | 1916 | sanborn06572_003 p1","metadata":[{"label":"streets","value":"17"},{"label":"intersections","value":"66"}],"created":"2026-09-22T23:32:59Z","modified":"2026-09-22T23:32:59Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd417m:g4174m:g4174wm:g065721916:06572_1916-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd417m:g4174m:g4174wm:g065721916:06572_1916-0001/info.json","type":"ImageService2","height":7708,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7708.0 -0.0,0.0 6512.0,0.0 6512.0,7708.0 -0.0,7708.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd417m:g4174m:g4174wm:g065721916:06572_1916-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2096.6,1202.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.621816,48.146544]}},{"type":"Feature","properties":{"resourceCoords":[1344.4,412.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.630258,48.152285]}}]}}]}