{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn05113_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Twin Bridges, Montana | 1921 | 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"},{"label":"pages","value":"6"},{"label":"placed","value":"3"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef-snap 2, georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 45.54334,-112.33081 +/-331m); p1__2 (tier 4, 45.54334,-112.33081 +/-331m); p1__3 (tier 4, 45.54334,-112.33081 +/-331m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Twin Bridges, Montana | 1921 | sanborn05113_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T04:07:50Z","modified":"2026-09-22T04:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5564.5,3607.5 5576.8,5350.0 6452.0,5343.9 6452.0,7652.0 -0.0,7652.0 0.0,0.0 5539.3,-0.0 5548.1,1254.7 6013.5,1253.6 6024.1,3615.1 5564.5,3607.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.3285970258421,45.54770445445165]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.32863723889787,45.54473730937127]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.33362678280349,45.54477094551618]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.33358656974772,45.54773809059655]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Twin Bridges, Montana | 1921 | sanborn05113_003 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-22T04:07:50Z","modified":"2026-09-22T04:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4086.4,0.0 6452.0,0.0 6452.0,7652.0 4069.0,7652.0 4068.0,7244.0 1734.0,7210.4 1733.2,7652.0 -0.0,7652.0 -0.0,0.0 1738.7,0.0 1728.0,460.0 4084.3,465.9 4086.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4068.0,7244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.3294739,45.541831]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,460.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.3309918,45.54495]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Twin Bridges, Montana | 1921 | sanborn05113_003 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T04:07:50Z","modified":"2026-09-22T04:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.8,1076.0 471.7,1070.3 459.2,-0.0 6452.0,-0.0 6452.0,7652.0 -0.0,7652.0 -0.0,5128.2 518.9,5122.2 498.8,3396.3 60.5,3400.6 66.8,1076.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051131921:05113_1921-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.32876726778647,45.541854851908816]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.32882737265163,45.53886870207725]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.33384835635876,45.53891898188578]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-112.3337882514936,45.54190513171734]}}]}}]}