{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn02801_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Red Oak, Iowa | 1886 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"10"},{"label":"placed","value":"4"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 3, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 41.01069,-95.21962 +/-212m); p1__3 (tier 1, 41.01768,-95.22768 +/-100m); p4__1 (tier 4, 41.00947,-95.22887 +/-233m); p4__2 (tier 1, 41.00592,-95.23334 +/-243m); p4__3 (tier 4, 41.00947,-95.22887 +/-233m); p4__4 (tier 4, 41.00947,-95.22887 +/-233m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Red Oak, Iowa | 1886 | sanborn02801_001 p1 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3660.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3991.6"}],"created":"2026-09-23T16:04:22Z","modified":"2026-09-23T16:04:22Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4527.6,7652.0 4523.2,5929.2 6445.1,5917.2 6452.0,3664.8 0.0,3660.4 0.0,3721.2 -0.0,7652.0 4527.6,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2648.0,5844.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.231544,41.0097285]}},{"type":"Feature","properties":{"resourceCoords":[4420.0,5844.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.2315481,41.008915]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Red Oak, Iowa | 1886 | sanborn02801_001 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"}],"created":"2026-09-23T16:04:22Z","modified":"2026-09-23T16:04:22Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 -0.0,5856.6 2458.5,5873.6 2499.2,0.0 4234.5,0.0 4236.5,283.8 6187.5,312.0 6173.7,2090.8 5803.0,2095.4 5781.1,3851.2 6170.4,3850.3 6141.4,7652.0 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4224.0,3864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.2291505,41.0089082]}},{"type":"Feature","properties":{"resourceCoords":[324.0,292.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.23154,41.010549]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Red Oak, Iowa | 1886 | sanborn02801_001 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:04:22Z","modified":"2026-09-23T16:04:22Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"391.3,3602.3 -0.0,3608.1 -0.0,1855.9 372.6,1846.6 364.1,71.5 6452.0,0.0 6452.0,7652.0 -0.0,7652.0 -0.0,7401.1 409.2,7396.0 391.3,3602.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.22817860372513,41.010582829444864]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.22425713636032,41.0105547916324]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.224300893512,41.00702047957254]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.2282223608768,41.007048517385]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0004__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Red Oak, Iowa | 1886 | sanborn02801_001 p4 [5]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"5116.8"},{"label":"split_canvas_y","value":"3062.8"},{"label":"split_canvas_w","value":"1335.2"},{"label":"split_canvas_h","value":"4589.2"}],"created":"2026-09-23T16:04:22Z","modified":"2026-09-23T16:04:22Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0004__5/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5837.0,7195.0 6124.2,7188.3 6124.2,3226.7 6087.4,3066.2 5116.8,3075.2 5117.2,7652.0 5844.5,7652.0 5837.0,7195.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd415m:g4154m:g4154rm:g028011886:02801_1886-0004__5/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6124.2,3226.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.2267584,41.0105344]}},{"type":"Feature","properties":{"resourceCoords":[6124.2,7188.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.2291497,41.0105584]}}]}}]}