{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08721_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rockdale, Texas | 1901 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"8"},{"label":"placed","value":"4"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 30.64891,-96.99874 +/-138m); p4__1 (tier 1, 30.65465,-96.99755 +/-100m); p4__3 (tier 1, 30.65344,-97.00007 +/-100m); p4__4 (tier 1, 30.65788,-97.00620 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockdale, Texas | 1901 | sanborn08721_004 p1 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.95"},{"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":"2026-10-22T13:17:07Z","modified":"2026-10-22T13:17:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"326.4,1794.5 326.5,1771.1 530.5,1776.2 1028.6,1774.1 1524.0,1769.8 1521.1,1509.2 1522.5,1253.9 1528.7,761.1 1525.1,515.2 1525.0,76.4 1501.9,145.7 1200.2,44.9 928.1,69.5 885.1,487.5 941.9,925.5 881.6,996.6 66.3,992.1 35.1,1463.5 84.7,1732.8 326.4,1794.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[526.0,1256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.0019231,30.6586746]}},{"type":"Feature","properties":{"resourceCoords":[1526.0,267.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9989199,30.6578352]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockdale, Texas | 1901 | sanborn08721_004 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:17:07Z","modified":"2026-10-22T13:17:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1133.0,1785.0 892.0,1778.5 631.0,1776.7 105.7,1778.9 101.4,1514.4 101.4,1255.3 105.0,755.0 100.1,505.4 97.5,60.0 211.6,33.2 1020.2,23.6 1428.2,160.0 1373.1,314.9 1480.1,823.1 1562.0,896.6 1592.6,1039.6 1547.6,1112.2 1565.6,1654.5 1612.0,1678.8 1132.8,1762.5 1133.0,1785.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[621.0,755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9993845,30.656518]}},{"type":"Feature","properties":{"resourceCoords":[105.0,755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9999028,30.6573927]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockdale, Texas | 1901 | sanborn08721_004 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:17:07Z","modified":"2026-10-22T13:17:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"193.1,1156.4 178.9,1156.4 161.4,1018.5 153.8,870.9 152.0,662.0 153.6,144.2 416.5,146.5 659.5,153.4 659.3,130.7 1164.7,43.3 1513.0,147.8 1512.8,508.9 1601.3,618.4 1523.8,1052.2 1548.6,1819.3 1487.3,1876.3 903.7,1762.2 787.9,1847.4 482.0,1755.1 139.8,1780.7 132.2,1576.1 109.2,1564.3 193.1,1156.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[665.0,1155.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.0028514,30.6538893]}},{"type":"Feature","properties":{"resourceCoords":[152.0,662.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.002401,30.6551756]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockdale, Texas | 1901 | sanborn08721_004 p4 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.96"},{"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":"2026-10-22T13:17:07Z","modified":"2026-10-22T13:17:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1431.0,30.1 1234.8,34.4 1156.8,123.6 834.6,184.5 800.9,328.9 927.0,571.4 897.8,895.8 893.0,895.9 893.0,898.7 770.8,899.6 659.8,902.9 478.6,1020.0 475.9,1020.0 314.5,1024.7 196.0,1128.8 196.0,1149.5 172.4,1149.5 93.8,1218.5 157.6,1267.4 145.4,1511.7 39.0,1718.8 449.5,1803.8 449.5,1789.5 588.3,1772.0 736.8,1764.5 947.0,1763.0 1468.0,1765.2 1467.2,1232.6 1461.4,722.7 1458.0,210.0 1462.7,1.0 1438.4,1.0 1431.0,30.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034rm:g4034rm_g087211901:08721_1901-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1458.0,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.0029561,30.6582059]}},{"type":"Feature","properties":{"resourceCoords":[947.0,1763.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.002401,30.6551756]}}]}}]}