{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02519_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Valparaiso, Indiana | 1905 | 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":"31"},{"label":"placed","value":"20"},{"label":"unplaced","value":"11"},{"label":"fit sources","value":"georef-snap 13, georef 3, snap:0 3, snap:2 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 19 panels"},{"label":"unplaced pages","value":"p10__2 (tier 1, 41.46548,-87.05347 +/-100m); p10__3 (tier 1, 41.46391,-87.05189 +/-118m); p10__4 (tier 2, 41.46516,-87.05282 +/-188m); p16__1 (tier 1, 41.46391,-87.06611 +/-100m); p16__4 (tier 1, 41.46490,-87.05877 +/-165m); p16__6 (tier 1, 41.46383,-87.06613 +/-100m); p16__7 (tier 1, 41.46459,-87.06612 +/-100m); p17__1 (tier 1, 41.47823,-87.05615 +/-120m); p17__2 (tier 1, 41.45738,-87.05629 +/-145m); p2__2 (tier 1, 41.46987,-87.06655 +/-100m); p5 (tier 1, 41.46643,-87.06150 +/-259m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p10 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"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":"5164.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"54.9,1826.0 560.9,1826.7 954.5,1821.4 1087.1,1821.7 1088.6,1846.1 1139.8,1842.5 1208.7,1521.4 1196.2,120.8 946.1,113.2 946.3,154.6 51.6,160.4 46.9,668.0 60.4,1171.9 54.9,1826.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05387957930648,41.46708212222983]}},{"type":"Feature","properties":{"resourceCoords":[1291.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05063900034321,41.467060356655175]}},{"type":"Feature","properties":{"resourceCoords":[1291.2,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.0506817385786,41.46343664514772]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05392231754188,41.46345841072238]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"591.1,36.4 1091.5,48.0 1481.0,51.2 1612.0,54.3 1612.0,78.7 1550.1,81.8 1612.0,231.5 1612.0,233.1 1563.0,1834.5 533.6,1878.0 421.1,1798.5 201.1,1795.7 65.3,1872.0 42.4,1446.0 98.1,978.4 95.8,972.3 96.2,506.2 86.0,477.8 93.8,57.7 94.3,32.8 591.1,36.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1080.0,1482.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.05249515046536,41.4608857336743]}},{"type":"Feature","properties":{"resourceCoords":[1080.0,36.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.05254232169234,41.46363490916599]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1247.4,1892.4 1449.9,1767.0 1451.4,1636.2 1568.1,1691.4 1562.5,1294.5 1560.8,920.5 1563.5,689.2 1559.7,184.1 1557.6,1.0 1548.1,1.0 1513.6,94.5 1294.6,74.3 1224.3,138.2 1097.2,138.9 990.9,47.6 524.8,28.8 306.4,135.8 129.9,136.6 112.8,969.8 43.1,1146.7 122.0,1386.3 131.1,1795.8 329.2,1879.5 830.2,1827.6 1247.1,1882.0 1247.4,1892.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1083.0,1485.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.05767890496459,41.47429668358532]}},{"type":"Feature","properties":{"resourceCoords":[1450.0,1656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.05811959229683,41.473597139271085]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.6,825.0 41.4,824.9 84.0,34.6 1420.8,43.3 1519.0,106.2 1522.0,543.0 1532.2,1338.0 1534.5,1815.5 72.4,1815.3 73.8,1656.0 76.6,825.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[77.0,698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.0647219,41.4728029]}},{"type":"Feature","properties":{"resourceCoords":[1522.0,543.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.0610058,41.4731051]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"47.4,1324.7 41.4,498.4 40.9,44.5 968.4,29.6 1095.1,239.7 1229.9,242.8 1171.6,362.4 1580.5,361.5 1574.8,1829.9 46.8,1821.0 47.4,1324.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[949.0,853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.05875362666391,41.4724592402753]}},{"type":"Feature","properties":{"resourceCoords":[72.0,48.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.06093788003521,41.473940626016514]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1475.3,1764.4 975.0,1740.2 494.8,1757.8 494.6,1781.4 123.7,1752.5 124.3,1520.6 124.3,1492.5 127.8,72.4 503.1,74.6 735.1,79.8 1242.0,81.2 1426.7,81.0 1426.8,72.0 1502.1,100.5 1572.0,262.6 1527.8,586.0 1611.0,924.2 1607.8,1494.0 1540.5,1704.0 1476.0,1704.0 1475.4,1738.6 1475.3,1764.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05752499264642,41.473516325116435]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05342610129749,41.473533254755026]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05339949224599,41.469865114740394]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05749838359492,41.4698481851018]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p16 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.10"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2788.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1377.2"},{"label":"split_canvas_h","value":"2184.0"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"835.7,256.1 1019.0,327.8 983.7,67.5 765.1,59.5 697.2,296.4 738.6,218.2 835.7,256.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[697.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06716232597607,41.464131737710545]}},{"type":"Feature","properties":{"resourceCoords":[1041.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06673655823515,41.46412226012875]}},{"type":"Feature","properties":{"resourceCoords":[1041.5,546.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06675643389083,41.46361375431193]}},{"type":"Feature","properties":{"resourceCoords":[697.2,546.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06718220163177,41.46362323189373]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p16 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.83"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4166.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2286.0"},{"label":"split_canvas_h","value":"2184.0"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1559.9,17.2 1449.8,59.6 1252.5,64.4 1201.7,34.5 1260.5,6.0 1056.0,3.3 1041.8,544.5 1538.5,543.6 1538.5,545.0 1561.5,545.0 1561.6,300.0 1565.8,1.0 1561.7,1.0 1559.9,17.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1041.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06963889087608,41.46978390484794]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06823032464298,41.46979757051625]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,546.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06821290304407,41.468790839693845]}},{"type":"Feature","properties":{"resourceCoords":[1041.5,546.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06962146927717,41.46877717402553]}},{"type":"Feature","properties":{"resourceCoords":[1566.0,49.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.0683445,41.4697061]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p16 [5]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"3612.0"},{"label":"split_canvas_w","value":"2788.8"},{"label":"split_canvas_h","value":"1942.8"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"24.8,1371.5 460.6,1377.7 540.6,1264.2 528.7,1206.3 626.5,1164.1 668.6,923.5 105.8,903.0 1.0,903.0 1.0,1114.8 24.8,1371.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0016__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,903.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06711900932541,41.4639274201016]}},{"type":"Feature","properties":{"resourceCoords":[697.2,903.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06633660805844,41.463676790305634]}},{"type":"Feature","properties":{"resourceCoords":[697.2,1388.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06656818033618,41.46326508860539]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1388.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06735058160315,41.463515718401354]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p17 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.30"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"5469.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"982.8"},{"label":"split_canvas_h","value":"3898.4"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1367.3,130.0 1426.7,130.8 1439.3,928.3 1566.5,952.2 1593.1,973.6 1593.2,531.2 1582.0,531.0 1589.1,137.8 1587.9,42.6 1367.3,109.3 1367.3,130.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1367.3,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05558123037252,41.46367327325581]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05499141496303,41.463678807431435]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,974.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05496235046432,41.46191461793411]}},{"type":"Feature","properties":{"resourceCoords":[1367.3,974.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05555216587382,41.46190908375849]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p17 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.21"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1247.2"},{"label":"split_canvas_w","value":"2327.6"},{"label":"split_canvas_h","value":"2652.8"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"402.6,322.4 18.3,339.4 32.3,961.8 328.1,954.4 526.1,571.6 402.6,322.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,311.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05676987316677,41.458468660247696]}},{"type":"Feature","properties":{"resourceCoords":[581.9,311.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05561633561115,41.45908368024106]}},{"type":"Feature","properties":{"resourceCoords":[581.9,975.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05468662753826,41.458090416550085]}},{"type":"Feature","properties":{"resourceCoords":[0.0,975.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05584016509388,41.457475396556724]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p17 [5]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3898.4"},{"label":"split_canvas_w","value":"2916.0"},{"label":"split_canvas_h","value":"3753.6"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"106.8,1891.7 435.5,1836.1 715.7,1873.8 692.6,999.2 535.3,994.9 486.3,1059.8 255.8,992.8 33.8,1003.8 34.3,1843.2 106.8,1891.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,974.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06277338198197,41.47738891237441]}},{"type":"Feature","properties":{"resourceCoords":[729.0,974.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06094230870116,41.47736447275832]}},{"type":"Feature","properties":{"resourceCoords":[729.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06098403070068,41.47558491897138]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06281510398149,41.47560935858747]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p17 [6]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.84"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2916.0"},{"label":"split_canvas_y","value":"3898.4"},{"label":"split_canvas_w","value":"3536.0"},{"label":"split_canvas_h","value":"3753.6"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"732.3,1889.1 1069.8,1891.8 1074.1,1862.1 1563.0,1860.0 1563.0,974.6 1525.5,974.6 1525.0,982.8 741.5,999.3 732.3,1889.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0017__6/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1563.0,1354.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.0647245,41.4718713]}},{"type":"Feature","properties":{"resourceCoords":[1563.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.064727,41.4709567]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"47.2,714.8 46.7,1018.2 49.6,1266.3 26.3,1267.7 40.8,1687.7 92.6,1776.7 1055.9,1881.0 1482.2,1868.0 1481.7,1813.1 1567.2,1813.3 1559.5,1274.3 1570.4,1274.3 1554.3,766.9 1531.9,766.6 1536.2,246.6 1537.6,77.9 1052.1,78.6 1047.8,108.1 712.7,104.5 706.5,423.4 706.5,424.5 468.8,424.5 383.8,424.5 71.2,427.9 43.1,714.3 47.2,714.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1535.0,764.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.06473218956606,41.469707682284174]}},{"type":"Feature","properties":{"resourceCoords":[67.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.06829767659463,41.468766611353956]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.2,1732.0 103.8,1682.5 488.1,1807.3 1451.8,1808.8 1494.1,1859.2 1540.4,1823.9 1541.4,1696.6 1545.3,1174.8 1545.5,686.0 1556.0,183.4 65.0,171.7 56.7,672.6 78.3,673.0 89.8,1161.9 79.2,1161.8 82.3,1681.0 1.0,1680.1 1.0,1733.0 46.2,1732.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1519.0,662.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.0610520306759,41.469747738436794]}},{"type":"Feature","properties":{"resourceCoords":[1519.0,1169.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.06104054522409,41.468789612289]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.7,1632.5 45.2,1121.2 38.6,642.5 41.8,150.0 1510.6,140.6 1510.8,168.6 1514.3,579.5 1523.0,1622.8 48.7,1632.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[68.0,623.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.06090861267184,41.46974004513948]}},{"type":"Feature","properties":{"resourceCoords":[1501.0,623.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.05721950745988,41.4697254703766]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.70"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"64.2,128.1 1563.8,127.1 1564.4,391.2 1560.2,657.3 1554.4,1165.1 1553.2,1912.0 1473.6,1912.0 1461.2,1886.5 266.3,1885.7 67.2,1836.1 39.4,769.6 82.5,239.9 64.2,254.0 64.2,128.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06113467625676,41.46803737266275]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05705218874219,41.468039434030544]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05704894908041,41.46438565831818]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.06113143659498,41.464383596950384]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.9,1584.8 148.8,1319.3 152.7,260.0 153.3,76.8 527.6,106.4 527.8,82.5 1012.5,65.4 1517.5,90.4 1516.5,251.8 1512.5,562.6 1511.6,1067.4 1502.3,1585.7 1504.8,1864.8 142.1,1852.3 147.9,1584.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05757341666647,41.4703011798459]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05351247706987,41.47032154772571]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05348046560567,41.46668718709329]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05754140520227,41.46666681921348]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"90.3,1879.2 1003.5,1886.9 1003.9,1844.5 1259.1,1856.2 1559.1,1884.8 1611.7,1652.5 1581.2,649.0 1501.0,575.8 1518.2,161.5 1503.8,110.5 1153.0,13.9 164.6,15.2 169.2,1.0 102.8,1.0 102.2,35.8 101.2,227.6 97.3,545.9 96.7,1062.8 87.5,1593.4 90.3,1879.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05400342572993,41.47026321709527]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05003722244619,41.47028120499027]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05000895151164,41.46673163001658]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05397515479538,41.46671364212158]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valparaiso, Indiana | 1905 | sanborn02519_004 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:45:06Z","modified":"2026-10-19T17:45:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1500.5,43.4 1490.8,541.4 1499.2,1035.8 1487.5,1677.6 994.8,1679.8 991.9,1688.0 785.7,1753.0 785.9,1772.4 623.5,1772.2 524.9,1849.0 278.6,1862.8 243.5,1778.8 159.1,1757.8 145.3,1429.4 73.8,1281.0 152.0,1280.0 153.4,541.0 159.3,38.7 1500.5,43.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094vm:g4094vm_g025191905:02519_1905-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.0575923801827,41.466858413460635]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05346568522181,41.4668614146205]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.05346096866441,41.46316800412205]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.0575876636253,41.463165002962185]}}]}}]}