{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08573_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Henderson, Texas | 1927 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"12"},{"label":"placed","value":"5"},{"label":"unplaced","value":"7"},{"label":"fit sources","value":"georef-snap 3, georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 32.15505,-94.79846 +/-456m); p1__3 (tier 4, 32.15505,-94.79846 +/-456m); p1__4 (tier 4, 32.15505,-94.79846 +/-456m); p3__2 (tier 1, 32.15913,-94.79649 +/-100m); p4__1 (tier 1, 32.15429,-94.79316 +/-256m); p4__2 (tier 1, 32.15148,-94.79377 +/-153m); p5__3 (tier 1, 32.15613,-94.79472 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Henderson, Texas | 1927 | sanborn08573_008 p1 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.15"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1796.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4656.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T12:15:03Z","modified":"2026-10-18T12:15:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.8,1856.5 1338.8,1241.5 1550.3,1055.1 1549.8,1062.2 1578.7,1063.8 1586.9,418.9 1571.8,207.6 1528.3,75.2 1370.5,25.6 1126.8,23.0 897.8,92.0 873.9,1107.2 855.2,1116.8 855.0,1119.4 855.0,1167.5 852.0,1167.5 851.8,1170.5 633.4,1196.4 529.4,1171.7 500.8,1204.1 517.1,1723.5 449.0,1738.0 449.0,1747.2 561.1,1757.8 684.4,1756.6 1004.6,1804.1 1005.1,1855.7 1316.8,1856.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1006.0,1281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.79813056247588,32.15790740215178]}},{"type":"Feature","properties":{"resourceCoords":[690.0,1754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.79954403774076,32.156130937344145]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Henderson, Texas | 1927 | sanborn08573_008 p2","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.50"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T12:15:03Z","modified":"2026-10-18T12:15:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"109.1,208.3 462.0,201.0 745.5,192.7 1186.0,296.1 1305.5,297.4 1305.2,324.1 1362.4,337.5 1360.9,510.8 1414.5,511.1 1469.8,1014.2 1353.4,1012.7 1361.7,1397.2 1365.6,1786.8 721.8,1780.3 456.2,1774.5 106.9,1770.5 113.5,1411.2 105.0,1014.5 101.4,605.2 55.6,601.0 99.7,159.8 109.1,208.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[968.0,1403.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.7990126,32.1524895]}},{"type":"Feature","properties":{"resourceCoords":[462.0,201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.8001227,32.1547157]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Henderson, Texas | 1927 | sanborn08573_008 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.07"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-18T12:15:03Z","modified":"2026-10-18T12:15:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"93.3,1869.1 854.2,1843.3 1095.5,1832.3 1191.8,1817.5 1195.7,1889.6 1573.7,1859.7 1568.5,212.4 1458.2,60.1 1269.7,49.8 1176.9,69.8 1131.3,152.0 887.8,188.4 801.1,309.2 530.0,246.0 471.9,246.0 471.9,246.0 471.9,239.2 472.0,231.8 68.1,630.5 93.3,1869.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[66.0,1445.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.79676214964157,32.15653085409125]}},{"type":"Feature","properties":{"resourceCoords":[66.0,1842.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.7968148522968,32.15578974682371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Henderson, Texas | 1927 | sanborn08573_008 p5 [1]","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"30"},{"label":"confidence","value":"0.23"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-18T12:15:03Z","modified":"2026-10-18T12:15:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"64.9,1210.8 62.5,1304.3 17.9,1306.2 36.5,1786.6 196.9,1879.3 972.8,1890.1 1109.8,1812.7 1200.5,1811.8 1239.2,1688.2 1361.7,1607.2 1470.4,1602.6 1469.7,1526.5 1567.3,1500.2 1552.6,1478.5 1588.5,1438.3 1558.3,938.3 1582.3,412.4 1547.6,184.3 1549.1,184.3 1549.0,148.0 1500.3,153.0 1378.9,152.4 996.4,146.0 681.0,146.9 680.1,94.8 355.9,48.5 231.2,50.4 117.7,40.4 117.6,31.1 99.7,35.0 47.2,98.5 47.6,141.9 65.6,267.3 52.9,408.9 57.9,432.9 233.5,427.4 374.6,421.8 594.5,471.0 636.4,471.0 654.0,471.0 654.0,476.4 654.0,484.3 682.5,490.7 682.7,577.0 709.4,576.8 739.5,827.0 681.6,826.9 687.7,1018.3 691.8,1212.3 371.1,1212.4 238.9,1210.9 64.9,1210.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[494.0,1212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.7990106,32.1517871]}},{"type":"Feature","properties":{"resourceCoords":[1549.0,148.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.7943293,32.155709]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Henderson, Texas | 1927 | sanborn08573_008 p5 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.11"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1884.0"},{"label":"split_canvas_w","value":"2616.0"},{"label":"split_canvas_h","value":"2750.0"}],"created":"2026-10-18T12:15:03Z","modified":"2026-10-18T12:15:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"610.0,471.0 609.5,476.1 366.7,495.0 344.7,520.8 245.2,484.2 65.0,488.2 2.4,473.6 25.3,908.1 7.3,1143.8 588.8,1142.7 589.2,1157.5 634.5,1157.5 637.7,1062.5 640.5,880.7 635.6,680.1 633.2,473.1 610.0,471.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085731927:08573_1927-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[442.0,883.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.80174229728891,32.15246457670711]}},{"type":"Feature","properties":{"resourceCoords":[72.0,883.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.80334442052227,32.152467212642286]}}]}}]}