{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn02747_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Missouri Valley, Iowa | 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-snap 1, georef 1"},{"label":"key map","value":"none"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Missouri Valley, Iowa | 1886 | sanborn02747_001 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:48:32Z","modified":"2026-09-21T11:48:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2504.2,7454.9 -0.0,7468.8 -0.0,-0.0 6452.0,-0.0 6452.0,7652.0 2505.7,7652.0 2504.2,7454.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.88582569986507,41.55754155782437]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.88584169987813,41.554536110988735]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.89057164502204,41.554550410937736]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.89055564500897,41.55755585777337]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Missouri Valley, Iowa | 1886 | sanborn02747_001 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"}],"created":"2026-09-21T11:48:32Z","modified":"2026-09-21T11:48:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5146.5,441.7 6452.0,444.4 6452.0,7652.0 -0.0,7652.0 0.0,-0.0 2602.2,-0.0 2601.6,251.9 5145.4,243.3 5146.5,441.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154mm:g027471886:02747_1886-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2956.0,4892.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.893293,41.557397]}},{"type":"Feature","properties":{"resourceCoords":[2956.0,2564.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.891863,41.557395]}}]}}]}