{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn04451_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Crystal Springs, Mississippi | 1889 | 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":"3"},{"label":"placed","value":"2"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef-snap 1, georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"},{"label":"unplaced pages","value":"p2__2 (tier 1, 31.98823,-90.36172 +/-100m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Crystal Springs, Mississippi | 1889 | sanborn04451_001 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T08:24:32Z","modified":"2026-09-21T08:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"310.9,6364.6 263.5,0.0 6452.0,0.0 6452.0,7652.0 -0.0,7652.0 -0.0,6369.2 310.9,6364.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.36065580015061,31.9871812720106]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.35912570667791,31.98996076529091]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.35526635671536,31.988410769087615]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.35679645018806,31.985631275807304]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Crystal Springs, Mississippi | 1889 | sanborn04451_001 p2 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-21T08:24:32Z","modified":"2026-09-21T08:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0002__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 2137.6,7652.0 3288.0,7652.0 5885.8,7652.0 5892.8,7284.0 6196.0,7284.0 6267.0,1102.8 6452.0,1105.4 6452.0,554.8 6452.0,0.0 5913.2,0.0 5488.0,0.0 2591.6,0.0 2009.6,2341.2 0.0,2342.0 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984cm:g3984cm_g044511889:04451_1889-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6196.0,7284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.357372,31.986026]}},{"type":"Feature","properties":{"resourceCoords":[3476.0,7284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.3580131,31.984816]}}]}}]}