{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08451_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Calvert, Texas | 1911 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"7"},{"label":"placed","value":"5"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 4, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 30.97869,-96.67328 +/-501m); p5__2 (tier 1, 30.98460,-96.66976 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calvert, Texas | 1911 | sanborn08451_006 p1 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.13"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3479.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4172.4"}],"created":"2026-10-19T08:11:43Z","modified":"2026-10-19T08:11:43Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"39.5,1888.7 73.9,1839.4 301.3,1911.9 1571.2,1865.1 1587.9,1332.9 1532.7,943.5 164.2,911.1 157.0,882.7 142.2,882.9 121.0,883.0 63.8,1304.9 99.3,1308.8 50.1,1791.6 40.3,1790.5 39.5,1888.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[546.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6721998,30.9744041]}},{"type":"Feature","properties":{"resourceCoords":[1530.0,1358.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.669911,30.973626]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calvert, Texas | 1911 | sanborn08451_006 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:11:43Z","modified":"2026-10-19T08:11:43Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1522.5,33.0 1521.7,182.1 1530.3,1078.0 1543.0,1616.2 1582.9,1615.6 1561.0,1879.0 43.2,1859.2 48.5,50.9 1496.4,37.4 1496.4,33.7 1522.5,33.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1018.0,560.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6754587,30.9815357]}},{"type":"Feature","properties":{"resourceCoords":[1018.0,1630.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6772612,30.9804536]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calvert, Texas | 1911 | sanborn08451_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:11:43Z","modified":"2026-10-19T08:11:43Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1574.2,1842.9 1067.0,1887.0 778.3,1809.2 471.2,1886.0 50.6,1874.5 75.9,1614.7 36.5,1614.7 31.4,1082.8 35.4,197.8 38.4,50.5 548.3,64.1 1557.8,66.0 1555.5,576.0 1551.5,664.6 1555.9,1098.5 1556.9,1619.9 1574.0,1619.8 1579.4,1847.3 1574.2,1842.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,1126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.67517066902423,30.979479274993388]}},{"type":"Feature","properties":{"resourceCoords":[1529.0,578.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.67305068100728,30.97863161266525]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calvert, Texas | 1911 | sanborn08451_006 p4","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:11:43Z","modified":"2026-10-19T08:11:43Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1604.7,1726.8 1595.1,1622.1 1605.7,1622.2 1606.8,1102.7 1568.5,1102.3 1584.7,646.7 1612.0,643.7 1612.0,612.0 1559.7,468.5 1566.2,53.9 204.5,1.0 35.5,1.0 35.8,53.2 29.1,559.8 24.3,647.8 24.9,1078.8 21.4,1596.8 38.3,1596.8 41.7,1822.8 116.8,1886.8 1517.9,1882.1 1604.7,1726.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1074.0,1617.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6735036,30.9759578]}},{"type":"Feature","properties":{"resourceCoords":[552.0,570.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6723834,30.9778274]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calvert, Texas | 1911 | sanborn08451_006 p5 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"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":"2026-10-19T08:11:43Z","modified":"2026-10-19T08:11:43Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.7,1731.9 559.0,1745.0 1541.4,1746.5 1540.7,1694.4 1558.1,1689.5 1497.7,439.9 1414.2,379.7 1194.0,377.5 1154.5,111.0 122.5,83.3 54.6,378.9 37.6,1732.3 62.7,1731.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084511911:08451_1911-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[559.0,1251.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6725204,30.9811175]}},{"type":"Feature","properties":{"resourceCoords":[559.0,1745.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6733776,30.9805877]}}]}}]}