{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08400_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Alvarado, Texas | 1912 | 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":"13"},{"label":"placed","value":"4"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p1k__1 (tier 4, 32.40657,-97.21168 +/-372m); p1k__2 (tier 4, 32.40657,-97.21168 +/-372m); p3__2 (tier 1, 32.40766,-97.21188 +/-100m); p3__3 (tier 1, 32.40541,-97.21270 +/-100m); p4__1 (tier 1, 32.40648,-97.21222 +/-100m); p5__2 (tier 1, 32.40300,-97.21178 +/-100m); p5__3 (tier 1, 32.40058,-97.21000 +/-100m); p5__4 (tier 1, 32.33952,-97.38424 +/-100m); p5__5 (tier 1, 32.40197,-97.20846 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alvarado, Texas | 1912 | sanborn08400_006 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:32:45Z","modified":"2026-10-19T08:32:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000020","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.2,91.5 1.0,62.7 1.0,89.7 1.6,106.7 3.5,1948.0 897.3,1948.0 898.4,1927.2 1156.1,1878.3 1156.2,1872.1 1501.6,1883.4 1502.2,1835.8 1504.6,1617.4 1526.0,1377.8 1532.0,1115.2 1503.2,1091.6 1506.2,820.9 1504.0,751.7 1540.8,751.3 1542.0,452.4 1540.5,33.3 1169.5,36.5 124.1,22.9 120.2,91.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[614.0,1621.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2135842,32.4052472]}},{"type":"Feature","properties":{"resourceCoords":[1150.0,442.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2123527,32.4075051]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alvarado, Texas | 1912 | sanborn08400_006 p3 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"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":"6584.0"},{"label":"split_canvas_h","value":"7760.0"}],"created":"2026-10-19T08:32:45Z","modified":"2026-10-19T08:32:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000030","type":"ImageService3","width":1646,"height":1940},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"91.0,461.0 90.3,761.6 53.3,762.1 55.6,831.7 53.0,1104.0 82.1,1127.7 76.4,1391.8 55.3,1633.0 53.1,1852.7 52.8,1890.9 623.4,1901.7 623.5,1888.0 1172.2,1901.1 1171.8,1916.9 1310.2,1895.2 1309.8,1886.6 1599.6,1877.7 1592.2,732.3 1257.7,681.0 1242.1,681.0 1242.1,678.6 1238.4,678.0 1203.3,451.0 1174.7,451.2 1174.1,451.2 1174.1,451.2 1172.2,249.7 1142.5,56.5 344.6,61.6 344.3,104.8 89.0,87.5 91.0,461.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[91.0,461.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2114617,32.4074814]}},{"type":"Feature","properties":{"resourceCoords":[1180.0,1640.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2090179,32.4052186]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000040__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alvarado, Texas | 1912 | sanborn08400_006 p4 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"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":"6584.0"},{"label":"split_canvas_h","value":"7768.0"}],"created":"2026-10-19T08:32:45Z","modified":"2026-10-19T08:32:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000040__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000040","type":"ImageService3","width":1646,"height":1942},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1568.5,635.0 1562.3,258.4 1610.9,257.9 1626.7,1.0 1583.0,1.0 1584.1,86.8 1290.8,40.5 820.5,103.7 734.8,104.8 712.7,48.0 113.4,77.2 41.8,1170.3 159.7,1454.3 470.9,1463.0 505.5,1463.0 505.5,1464.0 509.6,1464.1 572.2,1891.6 1564.8,1907.3 1598.7,1847.5 1633.0,1700.3 1563.2,1696.9 1568.5,635.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000040__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[720.0,612.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2122277,32.409886]}},{"type":"Feature","properties":{"resourceCoords":[720.0,259.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2114376,32.4098774]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000050__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alvarado, Texas | 1912 | sanborn08400_006 p5 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.84"},{"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":"5525.2"},{"label":"split_canvas_h","value":"7776.0"}],"created":"2026-10-19T08:32:45Z","modified":"2026-10-19T08:32:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000050__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000050","type":"ImageService3","width":1648,"height":1944},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.9,1943.0 156.4,1923.9 1203.2,1920.1 1344.5,1904.5 1372.2,1847.7 1232.6,1347.0 1263.7,936.6 1110.2,931.8 1097.8,931.9 1097.5,931.9 1097.5,931.4 1093.9,931.3 1035.5,76.3 914.9,35.1 75.2,78.8 97.5,217.1 81.7,216.7 70.7,765.6 84.4,765.6 75.8,1336.3 85.5,1336.3 76.0,1684.0 82.2,1684.0 132.9,1943.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400006:sb000050__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[365.1,766.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.210287,32.4041908]}},{"type":"Feature","properties":{"resourceCoords":[365.1,224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2090623,32.4041801]}}]}}]}