{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00230_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"De Valls Bluff, Arkansas | 1913 | 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":"8"},{"label":"placed","value":"2"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef-snap 1, georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p2__1 (tier 4, 34.78486,-91.45716 +/-137m); p2__3 (tier 4, 34.78486,-91.45716 +/-137m); p2__4 (tier 4, 34.78486,-91.45716 +/-137m); p2__5 (tier 4, 34.78486,-91.45716 +/-137m); p2__6 (tier 4, 34.78486,-91.45716 +/-137m); p2__7 (tier 4, 34.78486,-91.45716 +/-137m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Valls Bluff, Arkansas | 1913 | sanborn00230_001 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:55:52Z","modified":"2026-09-21T13:55:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,-0.0 1613.0,1913.0 -0.0,1913.0 -0.0,1617.1 57.1,1451.8 -0.0,1433.2 -0.0,876.6 58.7,758.6 385.1,864.6 635.4,84.3 377.0,-0.0 1613.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.45516378343683,34.785051673998666]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.45535085243584,34.78205241285234]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.45965149029722,34.78223591638747]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.45946442129821,34.7852351775338]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Valls Bluff, Arkansas | 1913 | sanborn00230_001 p2 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"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":"2026-09-21T13:55:52Z","modified":"2026-09-21T13:55:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1570.0,1780.6 1486.4,1521.8 1490.0,1361.0 1434.5,1361.0 1277.1,874.2 1295.5,754.3 1613.0,753.9 1613.0,-0.0 1128.2,0.0 1128.2,243.2 789.2,319.7 783.9,321.4 373.8,460.5 385.0,653.5 447.7,786.5 392.7,787.4 278.7,789.4 273.5,945.4 270.4,1040.1 262.1,1291.6 230.3,1291.6 229.7,1581.2 174.5,1731.3 0.0,1729.1 -0.0,1913.0 1613.0,1913.0 1613.0,1766.7 1570.0,1780.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004dm:g002301913:00230_1913-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1118.0,1361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.4581099,34.7857826]}},{"type":"Feature","properties":{"resourceCoords":[1490.0,1361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.4584343,34.7850848]}}]}}]}