{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn06976_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Alva, Oklahoma | 1909 | 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":"16"},{"label":"placed","value":"14"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef-snap 10, georef 4"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 36.80995,-98.66395 +/-505m); p5__2 (tier 1, 36.80592,-98.66131 +/-128m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"574.4,1913.0 573.7,1871.9 142.0,1877.8 128.4,13.7 1613.0,0.0 1613.0,1913.0 574.4,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66057947660208,36.80490595202191]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.65682493728895,36.80485761092468]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.6568960380299,36.80126706704579]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66065057734303,36.801315408143026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 81.2,1913.0 84.7,178.5 1502.8,179.5 1498.6,1869.8 1613.0,1870.8 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66745380729465,36.80156440265336]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.667469267951,36.79853874145963]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.67191927499549,36.798553527392464]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.67190381433913,36.801579188586196]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1502.6,53.1 1500.8,1913.0 68.2,1913.0 68.2,52.1 1502.6,53.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.6634641916069,36.801516508243544]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66348200299977,36.79852146425611]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66788697784926,36.798538498343085]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.6678691664564,36.80153354233052]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1804.1 1509.1,1803.7 1509.3,1865.2 72.8,1857.6 80.5,-0.0 1613.0,-0.0 1613.0,1804.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.65931357928191,36.801524707714805]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.6593143447561,36.79853393578991]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66371303702095,36.79853466785799]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66371227154677,36.801525439782885]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p14 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2948.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"78.5,-0.0 76.9,1913.0 662.1,1913.0 661.5,1757.9 736.7,1761.5 733.3,0.0 78.5,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[79.0,1478.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.6668877,36.7987392]}},{"type":"Feature","properties":{"resourceCoords":[79.0,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.663603,36.7987269]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p14 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"2933.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3518.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1378.3,148.8 804.2,149.9 804.3,1810.0 917.7,1810.7 917.8,1852.3 736.9,1852.8 737.0,1913.0 1613.0,1913.0 1613.0,-0.0 1377.3,-0.0 1378.3,148.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0014__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[804.3,414.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.6685199,36.7987501]}},{"type":"Feature","properties":{"resourceCoords":[804.3,1810.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.6718176,36.7987678]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.7,1874.9 -0.0,1875.6 0.0,-0.0 1613.0,0.0 1613.0,1877.7 145.7,1863.7 145.7,1874.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.67208383417635,36.80843610888942]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66834550208173,36.80842840856314]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.6683568283478,36.804853528687154]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.67209516044241,36.80486122901343]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"143.9,1868.0 137.9,0.0 1613.0,0.0 1613.0,621.7 1513.9,621.5 1512.0,1874.8 143.9,1868.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66866437949426,36.808403109056236]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66493540002224,36.80838577138097]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66496090168653,36.804819835432625]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66868988115854,36.80483717310789]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.7,1871.2 83.4,618.0 1425.0,624.1 1417.0,1869.7 75.7,1871.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66536402567692,36.808380527811124]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66163490999577,36.808377063935595]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66164000494385,36.80481099630023]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.665369120625,36.80481446017576]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p5 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"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":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1844.8 1613.0,511.9 903.3,505.1 489.7,295.2 490.1,0.0 0.0,0.0 -0.0,1846.9 1613.0,1844.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1459.0,624.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.658614,36.807184]}},{"type":"Feature","properties":{"resourceCoords":[1459.0,1842.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.6586356,36.8048729]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1564.1,1883.2 -0.0,1913.0 -0.0,-0.0 1559.4,20.2 1564.1,1883.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.67375440387664,36.80498623988686]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66999149230776,36.80496229748858]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.67002670716244,36.80136375223876]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.67378961873132,36.801387694637036]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"108.0,1885.0 97.4,11.1 1519.2,7.1 1507.5,1879.6 108.0,1885.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[101.0,1267.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.6701408,36.8025764]}},{"type":"Feature","properties":{"resourceCoords":[1520.0,632.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.6668104,36.8037346]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1503.8,1865.3 97.9,1876.7 107.1,19.1 1476.0,8.6 1503.8,1865.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66704599746822,36.804941630272076]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66327550184914,36.80490384890039]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66333107121268,36.801298046326195]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66710156683176,36.80133582769788]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alva, Oklahoma | 1909 | sanborn06976_006 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T06:19:37Z","modified":"2026-09-23T06:19:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"109.5,1885.7 101.6,28.4 1519.9,33.6 1507.0,1890.2 109.5,1885.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd402m:g4024m:g4024am:g4024am_g069761909:06976_1909-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66383342469938,36.80494475087924]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66006333163718,36.80493951431681]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66007103364875,36.80133409820772]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.66384112671095,36.80133933477015]}}]}}]}