{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02618_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Corydon, Iowa | 1907 | 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":"5"},{"label":"placed","value":"4"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 40.76057,-93.32074 +/-408m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Corydon, Iowa | 1907 | sanborn02618_003 p1 [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":"2513.2"},{"label":"split_canvas_h","value":"3943.6"}],"created":"2026-09-22T05:46:22Z","modified":"2026-09-22T05:46:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 -0.0,985.9 627.5,985.9 627.6,945.3 628.3,0.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[568.3,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.318098,40.763342]}},{"type":"Feature","properties":{"resourceCoords":[568.3,950.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.320358,40.763336]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Corydon, Iowa | 1907 | sanborn02618_003 p1 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3781.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3870.8"}],"created":"2026-09-22T05:46:22Z","modified":"2026-09-22T05:46:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,945.3 627.6,945.3 627.5,985.9 0.0,985.9 -0.0,1913.0 1613.0,1913.0 1613.0,945.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,945.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.32675885675273,40.76346839800897]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,945.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.32275555236205,40.76401303929655]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.32232417332372,40.76219270095967]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.3263274777144,40.76164805967209]}},{"type":"Feature","properties":{"resourceCoords":[679.0,1542.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.3248076,40.762575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Corydon, Iowa | 1907 | sanborn02618_003 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-22T05:46:22Z","modified":"2026-09-22T05:46:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1236.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.320371,40.756072]}},{"type":"Feature","properties":{"resourceCoords":[40.0,42.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.323367,40.759561]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Corydon, Iowa | 1907 | sanborn02618_003 p3","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"20"}],"created":"2026-09-22T05:46:22Z","modified":"2026-09-22T05:46:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 1613.0,1913.0 150.8,1913.0 149.2,0.8 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026181907:02618_1907-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[363.0,962.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.318877,40.757802]}},{"type":"Feature","properties":{"resourceCoords":[678.0,33.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.318076,40.759562]}}]}}]}