{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08400_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Alvarado, Texas | 1907 | 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":"15"},{"label":"placed","value":"6"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 6"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 15 panels"},{"label":"unplaced pages","value":"p1k__1 (tier 4, 32.40594,-97.21126 +/-385m); p1k__2 (tier 4, 32.40594,-97.21126 +/-385m); p1k__3 (tier 4, 32.40594,-97.21126 +/-385m); p1k__4 (tier 4, 32.40594,-97.21126 +/-385m); p1k__5 (tier 4, 32.40594,-97.21126 +/-385m); p2__1 (tier 2, 32.40488,-97.21204 +/-212m); p2__4 (tier 2, 32.40488,-97.21204 +/-212m); p2__5 (tier 2, 32.40488,-97.21204 +/-212m); p3__2 (tier 2, 32.40747,-97.21208 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020__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 | 1907 | sanborn08400_005 p2 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1706.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4909.2"},{"label":"split_canvas_h","value":"7816.0"}],"created":"2026-10-22T13:19:28Z","modified":"2026-10-22T13:19:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020","type":"ImageService3","width":1654,"height":1954},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"799.9,33.0 780.0,724.2 776.0,724.4 776.0,726.5 775.8,726.5 705.4,726.5 504.8,732.6 469.8,881.0 450.6,1890.8 1304.6,1931.6 1303.2,1934.1 1561.8,1936.0 1563.5,1636.8 1563.8,1129.5 1592.5,1103.4 1592.4,754.7 1563.8,754.2 1560.0,454.0 1580.9,46.6 799.9,33.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1018.4,1637.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2135842,32.4052472]}},{"type":"Feature","properties":{"resourceCoords":[1560.0,454.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2123527,32.4075051]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alvarado, Texas | 1907 | sanborn08400_005 p2 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.75"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2906.0"},{"label":"split_canvas_w","value":"1707.2"},{"label":"split_canvas_h","value":"3054.0"}],"created":"2026-10-22T13:19:28Z","modified":"2026-10-22T13:19:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020","type":"ImageService3","width":1654,"height":1954},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"163.7,892.4 192.1,1488.7 201.2,1447.2 370.5,1466.7 419.3,1416.9 384.8,755.2 201.5,735.9 200.9,726.5 162.2,726.5 163.7,892.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000020__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,726.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.20992380462971,32.40351775574019]}},{"type":"Feature","properties":{"resourceCoords":[426.8,726.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.20993307401079,32.40270039863426]}},{"type":"Feature","properties":{"resourceCoords":[426.8,1490.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.2116653227354,32.402714400415775]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1490.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.21165605335432,32.403531757521705]}},{"type":"Feature","properties":{"resourceCoords":[161.9,892.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2103037,32.4032107]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005: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 | 1907 | sanborn08400_005 p3 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.83"},{"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":"6608.0"},{"label":"split_canvas_h","value":"7784.0"}],"created":"2026-10-22T13:19:28Z","modified":"2026-10-22T13:19:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000030","type":"ImageService3","width":1652,"height":1946},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1039.8,1929.5 1585.2,1922.3 1586.0,1898.6 1649.8,1899.4 1651.0,1124.5 1599.9,1117.8 1610.5,767.5 1651.0,768.3 1644.4,646.3 1617.5,702.8 1589.8,688.2 1574.0,646.2 1417.9,642.9 1278.0,643.9 1222.5,644.3 1215.4,638.7 1159.7,265.9 1222.5,229.0 1222.5,218.0 1222.5,204.0 1222.5,204.0 1279.3,195.7 1265.4,55.1 688.8,82.5 696.4,31.5 523.0,36.3 523.0,32.7 151.9,33.5 129.9,439.1 132.6,738.1 161.1,738.7 160.1,1085.9 131.5,1111.8 129.5,1617.0 126.8,1917.1 472.3,1911.0 472.1,1920.4 1039.8,1931.0 1039.8,1929.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[522.0,452.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2114617,32.4074814]}},{"type":"Feature","properties":{"resourceCoords":[1596.0,1633.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2090179,32.4052186]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000030__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alvarado, Texas | 1907 | sanborn08400_005 p3 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.50"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4890.0"},{"label":"split_canvas_y","value":"812.4"},{"label":"split_canvas_w","value":"1718.0"},{"label":"split_canvas_h","value":"1764.8"}],"created":"2026-10-22T13:19:28Z","modified":"2026-10-22T13:19:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000030__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000030","type":"ImageService3","width":1652,"height":1946},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1299.8,285.4 1298.4,285.4 1298.4,279.3 1296.4,271.1 1255.8,271.1 1251.5,622.3 1302.7,628.1 1577.0,623.6 1614.3,326.8 1304.2,303.7 1299.8,285.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000030__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1222.5,203.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.20906075191485,32.4070098835718]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,203.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.20808588185287,32.40699637185075]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,644.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.2081022958264,32.406152291202915]}},{"type":"Feature","properties":{"resourceCoords":[1222.5,644.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.20907716588837,32.406165802923965]}},{"type":"Feature","properties":{"resourceCoords":[1251.5,622.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2090106,32.406207]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000040__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 | 1907 | sanborn08400_005 p4 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.79"},{"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":"3298.0"},{"label":"split_canvas_h","value":"7764.0"}],"created":"2026-10-22T13:19:28Z","modified":"2026-10-22T13:19:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000040__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000040","type":"ImageService3","width":1665,"height":1941},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"823.5,1464.6 823.5,1047.3 823.5,448.1 819.7,261.6 823.5,261.5 823.5,254.2 823.5,230.8 815.4,83.6 332.2,19.9 95.7,124.9 11.8,733.3 21.0,1289.5 38.5,1311.7 46.0,1491.4 66.8,1440.5 103.8,1490.5 93.9,1765.2 182.8,1901.0 789.6,1912.7 823.5,1464.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000040__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[497.7,1153.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2134199,32.4089149]}},{"type":"Feature","properties":{"resourceCoords":[497.7,263.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2114519,32.4088874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005: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 | 1907 | sanborn08400_005 p4 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.36"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3298.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3362.0"},{"label":"split_canvas_h","value":"7764.0"}],"created":"2026-10-22T13:19:28Z","modified":"2026-10-22T13:19:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000040__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000040","type":"ImageService3","width":1665,"height":1941},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"859.6,1874.3 954.7,1927.2 1619.4,1905.7 1635.5,1401.7 1601.8,722.0 1600.0,558.8 1638.0,558.7 1604.9,41.6 1550.1,97.7 1452.4,29.5 953.6,21.4 891.3,29.0 850.8,119.6 824.5,119.9 824.5,182.7 847.9,183.2 861.8,720.5 863.3,720.5 860.0,1280.0 850.8,1280.0 861.1,1620.4 859.0,1620.4 859.6,1874.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034am:g08400005:sb000040__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1600.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.2103037,32.4032107]}},{"type":"Feature","properties":{"resourceCoords":[1600.0,173.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.209038,32.4031984]}}]}}]}