{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn04939_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Billings, Montana | 1886 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"2"},{"label":"placed","value":"2"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef 1, georef-snap 1"},{"label":"key map","value":"none"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Billings, Montana | 1886 | sanborn04939_002 p1","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"6"}],"created":"2026-09-21T09:07:39Z","modified":"2026-09-21T09:07:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"59.2,7407.4 -0.0,7652.0 -0.0,-0.0 6452.0,-0.0 6452.0,7476.5 59.2,7407.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2284.0,2988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-108.501245,45.7830388]}},{"type":"Feature","properties":{"resourceCoords":[2284.0,7424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-108.5036982,45.7818354]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Billings, Montana | 1886 | sanborn04939_002 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T09:07:39Z","modified":"2026-09-21T09:07:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 30.8,658.8 6385.0,657.2 6452.0,7652.0 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254bm:g4254bm_g049391886:04939_1886-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-108.50420031019702,45.7828878075194]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-108.50171336028649,45.78036643055975]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-108.50597108922125,45.77829491588347]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-108.50845803913178,45.78081629284312]}}]}}]}