{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02597_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Cedar Rapids, Iowa | 1913 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"131"},{"label":"placed","value":"93"},{"label":"unplaced","value":"38"},{"label":"fit sources","value":"georef 44, georef-snap 42, snap:0 5, georef-street 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"15 sheet(s) cut into 36 panels"},{"label":"unplaced pages","value":"p103 (tier 1, 41.97302,-91.64715 +/-252m); p104 (tier 2, 41.96334,-91.66041 +/-100m); p108__2 (tier 1, 41.96257,-91.66211 +/-107m); p110__2 (tier 1, 41.96591,-91.67735 +/-100m); p110__3 (tier 1, 41.96292,-91.67745 +/-100m); p13 (tier 2, 41.98148,-91.66629 +/-100m); p1__1 (tier 1, 41.98044,-91.66511 +/-211m); p1__2 (tier 1, 41.96289,-91.66981 +/-118m); p1__3 (tier 1, 41.98205,-91.66651 +/-161m); p2 (tier 1, 41.98127,-91.67072 +/-126m); p23 (tier 1, 41.97231,-91.67193 +/-254m); p3 (tier 3, 41.97402,-91.66771 +/-1090m); p4__1 (tier 1, 41.98342,-91.66402 +/-259m); p4__2 (tier 1, 42.00304,-91.62846 +/-100m); p53 (tier 1, 41.96822,-91.65664 +/-255m); p54 (tier 2, 41.96971,-91.65414 +/-100m); p55 (tier 1, 41.97043,-91.65148 +/-258m); p56__2 (tier 1, 41.97109,-91.64717 +/-100m); p59 (tier 3, 41.98774,-91.67011 +/-521m); p5__1 (tier 1, 41.96533,-91.68697 +/-149m); p5__2 (tier 1, 41.96438,-91.68432 +/-249m); p5__3 (tier 1, 41.98826,-91.65769 +/-100m); p6 (tier 1, 41.98847,-91.65525 +/-268m); p60__2 (tier 1, 42.01097,-91.63434 +/-100m); p60__3 (tier 1, 42.01128,-91.63614 +/-110m); p60__4 (tier 1, 42.00979,-91.63340 +/-159m); p62__2 (tier 1, 41.99273,-91.68248 +/-154m); p63 (tier 1, 41.98834,-91.68039 +/-252m); p70__1 (tier 1, 41.97286,-91.67507 +/-264m); p70__2 (tier 1, 41.97047,-91.67213 +/-100m); p74__1 (tier 2, 41.97749,-91.67560 +/-100m); p74__2 (tier 1, 41.97818,-91.68914 +/-115m); p8 (tier 1, 41.99274,-91.65019 +/-258m); p86__2 (tier 1, 41.95282,-91.64535 +/-100m); p87__1 (tier 1, 41.97005,-91.68659 +/-128m); p92 (tier 1, 41.97164,-91.66949 +/-269m); p98__1 (tier 2, 41.96769,-91.66776 +/-153m); p98__2 (tier 1, 41.96376,-91.65281 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0010","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"172.2,1902.0 180.8,1595.8 180.1,1309.0 185.7,707.2 45.1,708.5 49.9,114.4 857.2,100.7 993.5,106.6 1216.0,106.8 1215.9,84.5 1603.5,84.8 1602.5,1901.7 1109.5,1904.2 1086.8,1920.7 1063.4,1927.2 1016.6,1886.2 172.2,1902.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1216.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64426295389266,41.992740903597294]}},{"type":"Feature","properties":{"resourceCoords":[58.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64653126713173,41.99145042672476]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0100/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p100","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0100/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0100","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"137.6,966.0 138.4,137.7 603.3,136.8 602.4,18.0 665.0,19.0 666.0,27.0 683.0,27.0 687.0,18.0 755.0,18.0 756.0,23.0 859.0,17.0 862.0,26.0 895.0,26.0 914.0,26.0 942.0,26.0 1007.0,26.0 1010.0,20.0 1495.3,71.7 1491.7,534.6 1484.7,1138.5 1483.2,1808.1 919.6,1803.8 147.9,1799.8 137.6,966.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0100/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[609.0,974.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67224504265714,41.964214138318184]}},{"type":"Feature","properties":{"resourceCoords":[1493.0,1127.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67007777595524,41.9639221726029]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0101/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p101","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0101/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0101","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1207.0,1908.4 108.2,1891.5 109.0,1208.0 115.4,591.6 119.0,60.6 720.2,67.6 720.2,139.0 1037.0,99.6 1259.2,554.9 1282.3,615.8 1314.3,652.0 1524.0,1084.2 1537.0,1121.0 1333.8,1213.0 1292.4,1217.7 1292.3,1900.5 1207.0,1908.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0101/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[109.0,1208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6700983,41.9639013]}},{"type":"Feature","properties":{"resourceCoords":[1537.0,1121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6666619,41.9640341]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0102/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p102","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0102/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0102","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.0,210.0 460.4,205.6 459.1,118.5 571.0,171.1 890.1,45.3 971.0,132.2 1219.3,70.5 1503.6,139.4 1498.0,737.6 1589.5,853.7 1524.2,871.7 1485.4,1178.2 1554.6,1324.5 1519.0,1486.3 1600.7,1606.0 1525.3,1920.0 1513.1,1920.0 1450.3,1799.0 1362.0,1837.1 1260.8,1862.5 1179.5,1869.5 991.4,1873.5 709.0,1874.0 142.7,1878.0 140.0,1335.0 144.1,1297.3 142.8,829.5 130.1,784.1 135.5,721.0 133.0,210.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0102/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[709.0,1874.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6648233,41.9635839]}},{"type":"Feature","properties":{"resourceCoords":[133.0,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6678613,41.9658979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0105/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p105","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0105/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0105","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.1,61.8 563.2,68.8 1344.9,71.4 1628.6,73.1 1641.0,608.8 1625.7,608.7 1642.2,1620.1 1642.0,1664.0 1642.1,1675.0 1642.0,1750.0 1642.0,1753.0 1642.0,1839.4 1580.9,1921.0 90.3,1868.0 32.1,225.4 36.1,61.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0105/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1049.0,1130.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67224046188784,41.960792510245]}},{"type":"Feature","properties":{"resourceCoords":[1049.0,75.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67221575902428,41.9626936608616]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0106/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p106","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0106/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0106","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"45.9,1603.5 33.1,605.6 48.2,605.8 37.9,77.1 321.4,79.8 1397.3,99.4 1480.8,91.9 1483.9,394.4 1481.9,593.3 1482.5,1161.7 1643.0,1165.5 1643.0,1172.2 1643.0,1175.0 1612.5,1173.8 1624.1,1860.6 1572.8,1920.0 634.4,1903.6 434.2,1779.2 242.1,1773.0 79.6,1774.0 44.9,1819.9 45.2,1734.7 45.9,1603.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0106/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[323.0,1138.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6701267,41.9607462]}},{"type":"Feature","properties":{"resourceCoords":[323.0,609.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6701188,41.9617124]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0107/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p107","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0107/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0107","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"114.8,105.5 155.7,100.3 322.0,22.7 363.4,22.8 602.9,499.6 1116.1,240.5 1256.8,523.5 1641.7,1268.3 1644.5,1328.5 1643.1,1372.9 1603.7,1373.7 1584.7,1903.6 301.8,1871.5 301.7,1861.8 139.6,1860.3 130.8,1286.6 129.9,1085.7 122.5,780.4 114.8,105.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0107/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[874.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.66545112556638,41.962175689856366]}},{"type":"Feature","properties":{"resourceCoords":[853.0,-236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.66543968056413,41.96445543433705]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0108__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p108 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"6672.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0108__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0108","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"23.1,547.1 24.0,974.9 25.1,1492.1 76.3,1517.2 82.2,1791.0 128.7,1830.2 750.1,1920.3 1604.7,1886.2 1624.4,1156.7 1569.0,866.7 1432.0,693.0 1483.2,521.0 1337.7,482.6 1193.0,543.4 1037.7,525.0 901.4,421.0 899.0,421.0 897.5,418.0 828.2,365.1 842.7,308.6 808.6,240.5 782.1,187.8 773.1,169.8 683.9,206.8 581.9,230.8 500.1,236.8 311.1,237.9 27.4,234.4 23.1,547.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0108__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[52.0,1378.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.66353461698039,41.96172535184938]}},{"type":"Feature","properties":{"resourceCoords":[52.0,242.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.66476080760286,41.96359115159601]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0109/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p109","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0109/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0109","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"429.8,107.0 429.8,113.2 973.5,96.7 973.4,148.3 1012.5,148.4 1012.5,133.5 1012.3,49.6 1638.0,98.0 1629.3,110.0 1629.1,769.3 1619.9,769.3 1624.0,1864.9 1537.6,1917.4 95.9,1903.7 52.0,1860.3 40.5,1117.8 78.6,134.9 23.8,131.4 23.8,131.0 429.8,107.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0109/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[430.0,238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6826526,41.9638847]}},{"type":"Feature","properties":{"resourceCoords":[1015.0,1334.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6812101,41.9618475]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p11","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0011","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"639.0,1555.0 316.1,1541.2 233.4,1164.2 268.9,320.9 478.5,307.3 529.2,243.4 734.5,330.6 1147.9,346.4 1246.7,447.4 1241.2,973.8 1242.1,1238.8 1230.0,1558.0 639.0,1555.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6734437740809,41.97955656921722]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67026553614991,41.9814316588644]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.66729841016544,41.978656249295]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67047664809643,41.97678115964782]}},{"type":"Feature","properties":{"resourceCoords":[1230.0,1558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6687141,41.978729]}},{"type":"Feature","properties":{"resourceCoords":[1230.0,1558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6687141,41.978729]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0110__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p110 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"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":"6672.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0110__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0110","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"44.8,1858.2 67.5,1844.5 119.2,1895.8 1097.2,1900.5 1192.1,1665.0 1154.6,1407.8 1566.4,1391.9 1616.6,943.3 1641.0,940.5 1641.0,911.6 1103.5,801.0 1103.7,762.1 1107.2,241.7 1106.2,60.1 1101.0,48.9 55.2,85.8 53.2,751.8 43.9,751.7 44.8,1858.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0110__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[49.0,1334.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67968590791365,41.96181915398811]}},{"type":"Feature","properties":{"resourceCoords":[1106.0,1334.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67707758472669,41.96181375644578]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0012","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"260.7,1240.0 253.3,972.3 246.0,440.6 295.2,352.3 478.4,322.8 1442.0,361.5 1369.0,606.4 1439.2,1458.2 1393.8,1526.4 1124.0,1533.8 836.3,1534.7 836.5,1590.8 608.7,1591.2 522.5,1586.0 371.2,1562.2 256.2,1562.6 260.7,1240.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67148849531681,41.98069316522782]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.66830745420535,41.98250642677305]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.66546021244729,41.979707058639015]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.66864125355875,41.977893797093785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p14","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0014","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"266.6,1820.2 269.9,621.3 173.0,218.9 308.4,78.1 1253.5,136.1 1347.2,349.6 1378.3,445.1 1401.6,607.4 1414.5,649.5 1415.0,707.5 1419.2,1257.3 1418.9,1861.0 831.1,1864.5 254.2,1866.2 266.6,1820.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[830.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.663156,41.9819037]}},{"type":"Feature","properties":{"resourceCoords":[254.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6642697,41.9812728]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p15","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0015","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"264.0,1258.0 265.2,705.8 265.3,647.7 252.7,605.2 230.9,442.1 200.6,345.8 108.7,130.4 249.0,140.4 935.4,76.0 1423.3,109.6 1412.8,646.5 1413.0,1258.0 1433.0,1339.1 1427.5,1809.0 1427.7,1870.5 257.7,1864.2 264.0,1258.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[264.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6620222,41.9825544]}},{"type":"Feature","properties":{"resourceCoords":[1413.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6598266,41.9838237]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p16","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0016","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1271.4,1896.4 260.3,1869.3 260.1,1808.3 266.0,1337.3 246.0,1256.0 246.3,643.1 257.3,105.0 265.1,105.5 1092.8,45.5 1353.0,114.8 1424.2,97.1 1417.8,524.2 1390.1,586.6 1358.3,621.5 1295.9,650.7 1351.9,667.4 1419.2,734.1 1415.2,791.5 1390.7,875.5 1339.7,956.3 1302.0,1053.3 1285.9,1154.2 1280.2,1256.2 1271.5,1871.8 1271.4,1896.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[822.0,1256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6587291,41.9844592]}},{"type":"Feature","properties":{"resourceCoords":[246.0,1256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6598266,41.9838237]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0017","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"507.2,57.5 1202.2,72.0 1492.4,142.8 1487.2,333.9 1562.6,381.6 1498.7,417.0 1495.2,544.4 1559.5,593.0 1518.2,1267.6 1521.5,1267.5 1519.6,1864.2 1493.5,1864.5 1335.5,1866.0 115.0,1880.3 114.8,1273.2 119.0,1172.5 133.4,1072.8 169.3,976.6 218.4,896.1 241.4,813.0 244.5,756.4 177.2,691.5 121.8,675.8 182.9,646.1 213.8,611.2 240.2,549.4 240.4,128.1 507.2,57.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1280.0,1870.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.65469823925766,41.98537709448914]}},{"type":"Feature","properties":{"resourceCoords":[102.0,1870.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.65699930772139,41.984083743048814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p18","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0018","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"295.7,1878.0 150.2,1880.0 88.8,1293.0 97.7,1292.9 123.5,1292.8 127.2,702.7 123.9,702.8 166.8,35.6 237.6,89.5 1523.3,89.8 1569.7,94.7 1567.4,374.2 1569.2,689.5 1567.5,1006.6 1559.9,1284.1 1557.5,1871.3 1597.7,1871.3 1558.8,1930.2 1288.9,1931.1 1222.8,1876.7 1152.2,1877.9 861.6,1876.0 394.2,1877.4 348.9,1932.0 309.0,1932.0 308.0,1937.0 296.0,1937.0 295.7,1878.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[730.0,696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6539384,41.9871987]}},{"type":"Feature","properties":{"resourceCoords":[722.0,1876.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6521846,41.9854613]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p19","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0019","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"21.2,1871.8 24.1,1284.8 31.9,1007.4 33.8,690.4 32.3,375.3 34.8,95.9 1099.4,85.5 1494.1,83.8 1559.8,83.5 1553.2,682.7 1558.0,682.7 1571.0,1276.5 1564.0,1276.6 1572.2,1865.9 1474.5,1866.0 1423.5,1865.8 1428.9,1930.6 1426.2,1930.7 1009.0,1932.0 1008.0,1948.0 997.0,1948.0 996.0,1932.0 971.0,1932.0 970.0,1948.0 966.0,1948.0 965.0,1932.0 762.0,1933.0 761.0,1948.0 681.1,1948.0 679.3,1946.5 645.0,1947.2 644.0,1933.0 497.0,1932.0 470.0,1939.0 460.8,1870.8 76.7,1871.9 21.2,1871.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[858.0,1867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6489037,41.9873404]}},{"type":"Feature","properties":{"resourceCoords":[1433.0,683.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6495487,41.9897162]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0020","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.4,77.0 127.6,55.6 1470.9,49.5 1471.7,22.7 1483.4,22.7 1487.0,22.7 1486.6,74.2 1482.5,671.0 1623.7,669.5 1618.7,1273.8 1619.7,1561.9 1611.3,1869.4 1588.8,1930.2 1013.0,1932.0 1012.0,1948.0 1002.0,1948.0 1001.0,1932.0 982.0,1932.0 981.0,1948.0 969.0,1948.0 968.0,1932.0 948.0,1932.0 947.0,1948.0 943.0,1948.0 776.2,1879.0 720.2,1872.2 353.1,1874.8 81.7,1875.0 74.0,1280.5 81.0,1280.5 68.5,681.5 63.7,681.5 70.9,77.1 118.4,77.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[780.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64615722647076,41.988934729186326]}},{"type":"Feature","properties":{"resourceCoords":[780.0,676.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64792229318763,41.990652522549986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p21","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0021","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"427.3,1571.2 333.1,1567.3 187.6,1547.8 230.7,1489.2 138.9,1209.2 186.3,812.0 267.6,696.5 316.0,394.4 310.4,369.8 634.0,382.0 1226.0,382.0 1232.7,703.4 1223.8,1211.8 1212.6,1575.8 427.3,1571.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[634.0,382.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6698515,41.978065]}},{"type":"Feature","properties":{"resourceCoords":[1226.0,382.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6687141,41.978729]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p22","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0022","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"357.7,387.7 508.1,411.6 593.9,416.9 820.7,416.6 821.0,360.7 1107.5,360.1 1376.1,352.9 1355.0,384.3 1438.5,778.4 1413.5,1522.5 1496.0,1585.8 1372.3,1586.1 1317.2,1586.2 873.0,1588.6 242.4,1589.0 249.8,1222.8 253.3,711.2 243.2,387.9 357.7,387.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[821.0,996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.666702,41.9784941]}},{"type":"Feature","properties":{"resourceCoords":[821.0,1588.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6658262,41.9776467]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p24","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0024","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"234.4,1569.1 242.7,1007.1 57.6,1005.0 16.6,988.8 59.6,983.2 185.3,981.0 186.3,403.5 225.4,403.4 348.2,403.1 372.3,421.5 554.1,355.1 666.5,403.8 885.5,337.8 1201.6,364.9 1329.5,210.3 1320.2,100.3 1369.6,22.8 1392.0,22.9 1396.1,22.9 1396.2,94.6 1397.4,1564.0 822.8,1569.3 464.7,1572.7 259.9,1569.5 234.4,1569.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[824.0,991.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6627328,41.9780703]}},{"type":"Feature","properties":{"resourceCoords":[824.0,402.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6636086,41.9789195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p25","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0025","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1223.0,985.2 1208.0,1008.2 1228.6,1559.0 1225.0,1559.0 804.2,1561.6 746.2,1555.1 693.0,1525.0 659.1,1574.3 222.0,1555.9 130.3,1375.0 93.0,1093.8 101.8,520.1 198.1,386.0 343.8,403.8 438.1,406.6 1223.8,401.7 1223.0,985.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[636.0,985.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6672119,41.9755195]}},{"type":"Feature","properties":{"resourceCoords":[1225.0,1559.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6652178,41.9753425]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p26","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0026","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"240.7,1563.0 220.4,1005.6 235.6,982.4 237.0,392.0 871.5,391.2 1318.4,388.6 1334.2,388.6 1332.9,973.5 1205.6,975.6 1123.3,986.3 1203.6,997.7 1391.0,1000.0 1382.2,1569.0 1262.7,1567.2 816.3,1560.0 760.9,1560.3 288.8,1562.7 240.7,1563.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[237.0,1563.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6652178,41.9753425]}},{"type":"Feature","properties":{"resourceCoords":[237.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6669386,41.9770089]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p27","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0027","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"254.8,374.1 254.6,260.4 270.8,234.8 216.8,109.2 254.0,90.0 829.7,88.8 1416.2,85.8 1415.4,675.9 1406.0,974.2 1404.0,1264.3 1405.8,1840.0 831.9,1844.6 259.1,1848.0 254.8,374.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[832.0,1272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.660511,41.9793368]}},{"type":"Feature","properties":{"resourceCoords":[254.0,90.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6633776,41.9804031]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p28","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0028","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1162.0,1845.7 1023.1,1846.1 226.0,1844.0 227.0,1268.8 230.4,978.9 241.2,680.7 244.8,91.0 1406.7,92.5 1404.8,356.6 1406.6,600.6 1381.0,677.0 1382.4,982.9 1377.5,1319.3 1373.5,1845.1 1162.0,1845.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1381.0,677.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6580677,41.9821026]}},{"type":"Feature","properties":{"resourceCoords":[226.0,1844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6585603,41.9791498]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p29","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0029","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1143.1,1844.1 307.6,1852.1 308.4,1323.6 311.2,985.5 308.0,678.0 333.2,601.1 330.0,355.8 330.3,90.4 330.3,89.7 1337.4,105.6 1339.3,362.3 1341.2,609.5 1325.8,739.8 1327.0,1841.0 1143.1,1844.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[308.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6580677,41.9821026]}},{"type":"Feature","properties":{"resourceCoords":[1327.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6543925,41.9815473]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p30","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0030","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"912.1,1849.0 155.8,1848.0 98.0,1848.0 46.0,1848.0 54.3,746.6 70.8,616.5 71.0,369.2 71.3,88.0 1303.9,88.2 1454.4,88.5 1511.8,688.5 1638.3,687.9 1639.0,814.0 1647.0,818.0 1639.0,819.0 1638.9,891.2 1333.7,1293.3 1161.5,1523.7 979.4,1762.1 912.1,1849.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1248.0,88.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6547032,41.9853824]}},{"type":"Feature","properties":{"resourceCoords":[46.0,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6543925,41.9815473]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p31 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.74"},{"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":"3217.2"},{"label":"split_canvas_h","value":"4626.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.2,637.2 17.3,662.2 16.4,1024.7 55.2,1024.1 57.0,1113.5 679.4,1100.8 772.5,1072.3 758.1,1060.0 745.3,261.1 682.8,45.5 688.9,19.4 659.4,19.3 620.9,19.1 17.8,561.2 46.2,637.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[762.3,551.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6426096,41.9897756]}},{"type":"Feature","properties":{"resourceCoords":[57.0,1113.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6445054,41.988785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p31 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"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":"6656.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"483.2,1178.8 473.5,1168.8 363.1,1261.0 347.4,1283.3 297.4,1238.2 17.2,1476.9 17.8,1624.3 18.7,1843.6 64.4,1843.2 952.4,1835.0 1637.1,1829.0 1640.0,1569.0 1637.0,1281.0 1637.3,985.9 1637.0,982.0 1637.4,919.8 1637.7,673.6 1596.2,674.2 1592.2,130.8 1324.7,361.2 1051.1,593.6 1013.0,625.7 1058.0,670.6 796.5,901.8 795.9,974.3 794.9,1083.5 794.2,1156.5 689.9,1156.5 508.4,1156.5 483.2,1178.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1014.0,1272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64787296719504,41.98675840441098]}},{"type":"Feature","properties":{"resourceCoords":[1014.0,637.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64779005330847,41.98795197965033]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p31 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.68"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3190.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2091.6"},{"label":"split_canvas_h","value":"3095.2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1191.7,448.2 1230.8,402.4 1229.3,381.2 1200.4,277.0 1187.5,246.1 1176.2,236.3 942.6,95.3 921.5,97.0 890.6,110.2 882.3,142.8 822.6,488.5 838.1,700.4 860.8,719.9 1191.7,448.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0031__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[797.7,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64626410238714,41.98893442950327]}},{"type":"Feature","properties":{"resourceCoords":[1320.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64585355018535,41.988576023823356]}},{"type":"Feature","properties":{"resourceCoords":[1320.6,773.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64656081623262,41.98812210331317]}},{"type":"Feature","properties":{"resourceCoords":[797.7,773.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64697136843441,41.98848050899308]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p32","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0032","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.8,90.2 114.3,59.2 234.9,21.3 783.6,21.9 784.0,94.0 1438.6,90.6 1536.9,62.1 1575.6,83.7 1602.5,350.1 1595.4,1837.5 1638.0,1825.1 1638.0,1846.4 731.8,1849.7 167.1,1852.0 114.6,1852.2 99.6,1852.3 104.3,1582.8 103.2,1284.4 107.9,654.9 64.9,655.3 64.4,92.2 66.8,90.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[784.0,1274.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6446356,41.986644]}},{"type":"Feature","properties":{"resourceCoords":[784.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6445054,41.988785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0033","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1014.7,1892.6 964.5,1835.0 234.4,1834.5 130.1,1928.8 108.0,1928.7 104.7,1839.6 91.5,1543.7 75.8,1260.1 50.2,721.2 15.2,679.4 15.8,531.0 379.1,230.7 606.6,46.1 638.3,19.1 961.0,20.7 960.3,119.0 1010.7,119.3 1586.7,122.1 1589.2,696.5 1593.2,1265.7 1602.1,1836.6 1055.4,1835.2 1012.1,1835.0 1012.8,1849.5 1014.4,1886.8 1014.7,1892.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[73.0,1907.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6528148045396,41.98257979147068]}},{"type":"Feature","properties":{"resourceCoords":[978.0,115.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.65042889563902,41.98578695574926]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p34","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0034","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"95.0,1835.2 85.3,1259.3 80.5,685.2 77.3,105.8 419.9,107.1 1147.0,110.0 1199.7,110.1 1590.4,111.0 1554.7,689.7 1566.2,689.7 1598.3,1260.2 1581.4,1260.2 1592.3,1840.1 1638.0,1840.2 1638.0,1913.3 1525.0,1915.5 1122.8,1847.0 1121.0,1838.0 561.4,1835.8 95.0,1835.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1094.0,1260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6465709,41.9835738]}},{"type":"Feature","properties":{"resourceCoords":[1147.0,110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6463335,41.9856498]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0035","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.4,679.6 111.7,100.5 287.8,100.7 1198.0,102.5 1224.3,73.7 1369.3,32.5 1580.1,76.3 1599.2,1874.9 186.9,1903.7 160.9,1904.2 160.8,1831.0 115.1,1831.0 103.7,1250.7 120.5,1250.7 87.9,679.7 76.4,679.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[365.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64463904858071,41.98559593672979]}},{"type":"Feature","properties":{"resourceCoords":[1117.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64281106188959,41.98554201815495]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0036","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"30.1,1189.0 30.6,910.4 27.3,354.2 27.4,119.8 27.4,67.8 70.8,70.0 1080.7,117.7 1635.9,145.2 1636.0,150.0 1636.6,150.1 1637.2,154.3 1611.9,148.8 1606.8,1896.1 1273.5,1915.9 887.9,1845.5 867.8,1841.8 870.0,1788.7 312.7,1760.8 32.9,1748.2 30.1,1189.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1134.0,668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64778075322677,41.981567754420034]}},{"type":"Feature","properties":{"resourceCoords":[50.0,1228.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.65042784180397,41.98053336403812]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p37","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0037","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.4,1693.1 75.1,99.0 73.7,96.0 507.8,116.5 541.6,67.7 594.4,97.8 652.0,104.5 1070.0,104.0 1120.8,103.9 1584.4,103.3 1635.8,103.2 1636.0,117.0 1636.0,150.0 1636.7,150.1 1636.8,154.6 1636.0,155.0 1636.5,274.9 1633.4,1191.6 1628.8,1820.0 1055.1,1816.0 486.1,1826.0 236.6,1847.5 88.7,1842.6 36.4,1693.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[481.0,1254.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.664633,41.9730218]}},{"type":"Feature","properties":{"resourceCoords":[1070.0,104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6652178,41.9753425]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p38","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0038","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"253.2,1202.9 251.2,162.2 249.7,106.5 252.7,106.5 694.3,112.8 838.0,114.9 1043.2,117.8 1401.8,114.2 1406.0,686.0 1397.6,1834.8 866.3,1836.9 252.0,1836.0 253.2,1202.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1406.0,686.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6610194,41.976416]}},{"type":"Feature","properties":{"resourceCoords":[252.0,1836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6615504,41.9734874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p39","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0039","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"258.9,679.2 254.1,108.8 828.2,102.2 1398.6,98.7 1398.7,673.4 1403.8,1046.2 1398.7,1436.2 1399.8,1818.6 833.5,1828.4 252.0,1825.0 258.9,679.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[830.0,679.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6599092,41.9770463]}},{"type":"Feature","properties":{"resourceCoords":[252.0,1825.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6593324,41.974752]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p40","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0040","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"682.0,1840.8 682.0,1834.0 433.8,1835.2 159.2,1837.6 104.2,1838.1 102.4,1454.8 106.8,1063.8 101.1,690.1 100.0,114.0 673.0,108.3 1469.2,105.1 1535.7,104.5 1498.8,1773.9 1430.4,1775.1 1430.7,1835.4 1410.6,1835.5 682.0,1840.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[682.0,1834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6559938,41.976668]}},{"type":"Feature","properties":{"resourceCoords":[100.0,114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6596647,41.9785125]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p41","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0041","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"20.6,1856.4 20.3,1807.4 20.2,1794.5 90.6,1793.7 126.4,80.5 200.8,80.2 418.0,79.3 1271.9,75.4 1459.9,73.1 1513.0,73.0 1570.7,72.8 1546.8,1310.4 834.4,1948.0 801.5,1948.0 785.2,1948.0 770.0,1935.5 770.0,1930.0 763.3,1930.0 672.8,1855.4 20.6,1856.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0041/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65724361398593,41.98008000688946]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65411358028969,41.9818698498141]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65131325871647,41.979125287723065]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65444329241271,41.97733544479842]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p42","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0042","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"142.8,48.2 144.2,48.2 899.5,50.2 911.5,34.6 928.5,49.1 1070.7,43.9 1636.0,518.9 1637.3,520.0 1637.3,539.6 1637.5,596.1 1497.0,779.3 1158.4,1227.0 987.0,1450.0 646.0,1899.9 155.9,1483.6 95.8,1562.2 142.8,48.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[496.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.652037,41.9806518]}},{"type":"Feature","properties":{"resourceCoords":[987.0,1450.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6504772,41.9806042]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p43","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0043","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"454.0,127.9 1023.5,111.0 1598.0,108.0 1602.6,675.8 1615.7,1815.7 1615.7,1823.0 589.1,1887.7 487.8,1811.2 447.7,1864.3 97.7,1739.1 154.9,1393.3 151.5,1029.7 68.0,772.2 83.0,690.9 140.6,688.1 64.7,371.6 113.6,306.7 56.4,149.4 204.5,152.4 454.0,127.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1034.0,1822.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6601213,41.9703703]}},{"type":"Feature","properties":{"resourceCoords":[1598.0,108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6615504,41.9734874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p44","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0044","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"231.3,1867.9 232.0,1823.0 236.3,666.7 240.4,90.8 859.6,96.8 1395.2,99.2 1392.0,684.0 1390.5,1671.4 1395.4,1732.8 1413.7,1792.0 1459.5,1824.8 230.9,1891.2 231.3,1867.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1392.0,684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6584692,41.9739182]}},{"type":"Feature","properties":{"resourceCoords":[232.0,1823.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6589908,41.9710189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p45","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0045","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"716.8,108.8 1288.3,102.1 1343.8,102.0 1556.8,101.7 1572.3,681.3 1579.9,681.2 1586.2,1258.0 1570.7,1258.0 1557.9,1830.0 1334.7,1830.5 1227.9,1830.3 994.0,1829.0 649.8,1827.5 244.3,1829.1 200.9,1824.8 155.1,1792.3 136.5,1733.2 131.4,1671.9 129.0,685.9 129.9,102.0 716.8,108.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1286.0,682.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6562556,41.975198]}},{"type":"Feature","properties":{"resourceCoords":[130.0,1260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6576169,41.9731006]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p46","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0046","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.4,120.7 383.8,117.8 383.8,124.5 1562.0,108.1 1505.4,576.9 1399.1,674.0 1522.5,673.8 1526.9,1198.0 1532.0,1432.0 1533.8,1779.8 1535.2,1869.8 976.4,1873.4 976.3,1866.8 975.7,1826.3 686.2,1827.6 111.2,1838.6 98.1,1838.8 102.6,1270.3 118.0,1270.2 103.7,697.1 96.1,697.3 72.4,121.6 135.4,120.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[966.0,1267.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6531762,41.9756339]}},{"type":"Feature","properties":{"resourceCoords":[388.0,690.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6551484,41.9758424]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0047","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1292.8,1369.3 1177.6,1861.5 79.5,1687.5 318.2,1502.4 219.5,1506.2 228.1,864.4 230.3,582.3 237.5,20.1 291.0,20.4 288.7,36.2 1356.8,71.3 1546.2,162.6 1545.8,258.7 1545.8,282.7 1438.8,281.4 1434.9,418.4 1429.7,824.2 1420.2,824.8 1292.8,1369.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[228.0,284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.64904928335879,41.979553925794555]}},{"type":"Feature","properties":{"resourceCoords":[228.0,1490.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.65198194827457,41.97961944677634]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p48","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0048","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1497.2,753.4 1476.1,753.4 1474.3,887.8 1204.7,1112.1 1025.8,1266.0 620.6,1605.3 699.3,1702.0 556.0,1680.9 168.6,1928.3 148.1,1928.4 22.2,1777.8 21.9,1710.6 21.3,1602.1 164.4,1623.2 273.8,1124.7 273.9,1124.5 394.9,573.3 404.4,572.6 404.6,162.6 406.8,24.2 514.1,24.3 515.0,129.1 782.5,80.1 905.6,157.9 1159.7,147.2 1380.8,62.5 1504.5,105.0 1497.2,753.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0048/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64903188642694,41.97809600267802]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64920064086141,41.97509819206061]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6538906938064,41.97524617057951]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65372193937193,41.978243981196925]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p49","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0049","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1075.6,55.4 1075.1,92.0 1074.8,114.8 1617.1,91.8 1595.5,601.3 1615.5,601.4 1616.5,642.3 1626.9,1106.4 1630.0,1245.5 1639.0,1283.9 1601.0,1296.8 1584.5,1688.8 1414.5,1586.5 1353.4,1641.4 1280.6,1603.5 1159.2,1760.2 677.5,1674.8 112.2,1673.3 47.5,1493.2 61.4,696.1 77.3,327.9 147.2,177.7 55.4,106.6 1075.6,55.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[498.0,1144.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6584606,41.9687765]}},{"type":"Feature","properties":{"resourceCoords":[498.0,47.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6601213,41.9703703]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p50","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0050","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"119.8,804.6 116.0,620.9 115.0,580.0 95.1,580.0 117.5,71.7 1088.4,32.1 1215.3,32.0 1552.0,34.5 1577.5,34.8 1433.6,580.8 1270.0,580.0 1293.0,623.3 1488.5,860.9 1638.0,1258.5 1637.9,1315.2 1637.8,1349.5 1509.0,1597.5 1504.0,1806.9 1057.0,1904.6 285.5,1787.3 82.4,1664.8 99.4,1273.8 137.4,1261.0 128.4,1222.7 125.6,1083.9 119.8,804.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1270.0,580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.654839,41.9721284]}},{"type":"Feature","properties":{"resourceCoords":[115.0,580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6570985,41.9708227]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p51 [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":"6656.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"42.2,902.1 263.7,1435.6 130.1,1536.5 175.7,1557.4 482.0,1629.5 850.3,1860.3 906.5,1934.4 891.6,1848.4 1558.0,1892.1 1595.9,1591.0 1594.0,1516.6 1606.0,1490.4 1607.7,1176.9 1612.1,935.3 1596.2,863.0 1600.8,600.4 1534.8,597.6 1509.6,563.2 1495.9,476.4 1469.0,428.8 1201.0,76.8 1176.5,44.3 942.3,218.0 482.3,569.9 294.0,713.1 208.7,777.5 42.2,902.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[576.0,1186.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.65376709082096,41.97276701105238]}},{"type":"Feature","properties":{"resourceCoords":[728.0,411.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.65341668412083,41.97416506026331]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p51 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"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":"3044.0"},{"label":"split_canvas_h","value":"3528.4"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"99.8,799.5 295.1,638.0 616.0,246.9 713.8,127.5 612.7,42.0 614.1,131.3 58.1,131.2 65.3,561.1 58.9,614.6 19.0,691.3 19.0,713.2 19.0,733.4 69.9,774.5 99.8,799.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0051__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65257535901176,41.974893114231556]}},{"type":"Feature","properties":{"resourceCoords":[761.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65109040687278,41.975732226746814]}},{"type":"Feature","properties":{"resourceCoords":[761.0,882.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64979141294565,41.97444370013966]}},{"type":"Feature","properties":{"resourceCoords":[0.0,882.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65127636508463,41.9736045876244]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p52","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0052","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1161.9,1927.9 1119.3,1928.7 1030.0,1929.0 1030.2,1930.3 1008.5,1930.7 1007.2,1910.8 775.0,1901.1 777.0,1882.7 461.6,1921.2 96.5,1852.3 95.2,1872.5 92.2,1872.5 88.8,1800.2 99.0,1773.9 81.8,1468.2 71.6,1232.3 60.0,1192.3 51.5,1162.8 40.3,906.5 46.5,906.5 79.1,906.4 124.3,659.3 118.5,156.8 116.9,24.1 751.2,24.9 747.0,37.7 1590.2,74.2 1527.5,429.2 1626.7,915.0 1576.5,1225.4 1606.9,1805.5 1575.0,1805.1 1582.7,1920.2 1463.5,1922.4 1161.9,1927.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0052/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65128102198827,41.97551157217265]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64718951168425,41.975351450542064]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64744000857131,41.9717634842495]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65153151887533,41.971923605880086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0056__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p56 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.77"},{"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":"6656.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0056__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0056","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.9,130.0 48.2,476.8 102.2,1799.8 205.4,1897.0 935.2,1873.0 978.8,1618.2 1224.9,1380.3 1585.4,1298.2 1622.9,947.6 1575.5,83.6 1191.8,33.8 927.5,102.5 922.5,24.2 890.4,24.1 899.3,140.2 779.0,143.8 653.1,147.6 474.2,152.8 319.2,157.3 317.6,137.2 82.9,130.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0056__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":[-91.64980134731712,41.97218351755444]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64575545950824,41.97199148665334]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64605586263141,41.96844337280661]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6501017504403,41.968635403707715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p57","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0057","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.5,1855.0 68.6,104.4 511.2,22.6 1547.6,23.9 1614.2,50.8 1637.7,319.1 1637.8,346.1 1595.5,346.0 1595.6,868.9 1596.6,972.0 1597.5,1917.8 1319.5,1916.6 1036.2,1920.3 1036.2,1904.2 155.6,1908.5 66.5,1855.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0057/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65437191227176,41.99612240203284]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65184949049313,41.99364607060206]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65572472368763,41.99143478076371]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65824714546625,41.99391111219449]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p58","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0058","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1029.7,90.2 1029.7,106.6 1320.6,105.0 1606.0,108.3 1621.2,110.8 1554.8,452.8 1620.2,952.1 1567.7,1884.9 925.8,1831.3 377.1,1924.2 104.2,1901.6 62.1,1822.5 53.9,627.8 155.9,275.8 149.1,102.1 125.6,87.9 1029.7,90.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0058/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6579474,41.994004]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6554671,41.9916056]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65924679999999,41.989446300000004]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6617271,41.9918447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0060__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p60 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.72"},{"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":"6656.0"},{"label":"split_canvas_h","value":"4029.2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0060__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0060","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1577.5,968.8 1622.8,509.5 1586.5,48.7 72.6,88.3 82.9,756.5 637.7,840.6 702.0,975.4 850.0,1000.3 1577.5,968.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0060__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":[-91.63706790986502,42.0112372796788]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.63299526360947,42.01129150549542]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1007.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.63295108938969,42.00946059885377]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1007.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.63702373564524,42.00940637303715]}},{"type":"Feature","properties":{"resourceCoords":[845.0,804.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6349645,42.009803]}},{"type":"Feature","properties":{"resourceCoords":[845.0,804.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6349645,42.009803]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p61","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0061","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1601.4,797.5 1600.8,1492.3 1602.4,1825.0 1102.8,1823.0 1102.8,1812.3 607.9,1824.9 607.9,1834.8 96.5,1791.5 97.8,1757.2 42.3,378.1 89.6,82.1 1596.8,65.5 1601.4,797.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0061/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68721212606452,41.98544688217495]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68316627973833,41.98547240828848]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68312634018172,41.98192502697101]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68717218650791,41.98189950085748]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0062__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p62 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"6656.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0062__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0062","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1124.9,1927.2 1567.6,1923.6 1617.7,1716.8 1580.1,1120.5 1252.9,1084.2 1238.0,1084.1 1226.1,1084.0 1145.9,1083.2 1145.9,1083.1 1136.2,1071.2 614.8,42.7 96.4,36.7 66.2,87.9 68.0,1860.8 141.5,1905.8 896.9,1914.5 1134.4,1873.1 1124.9,1927.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0062__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":[-91.68242119609619,41.99247326910923]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67834466026241,41.99250837234127]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67828972955802,41.9889344901265]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68236626539179,41.98889938689447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p64","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.50"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0064","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"526.8,26.5 1496.3,117.7 1554.0,213.2 1585.2,717.5 1540.8,738.9 1533.9,1359.5 1598.2,1528.2 1608.8,1893.4 1537.4,1924.7 1526.3,1924.8 1523.4,1914.0 560.0,1918.5 62.4,1918.2 62.5,1905.3 64.6,1905.3 46.0,284.0 91.2,26.9 526.9,26.1 526.8,26.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0064/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67985566182062,41.98892516025686]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67573922758982,41.988959651209676]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67568538735422,41.98535924910475]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67980182158503,41.98532475815193]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p65","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0065","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1599.2,34.6 1599.2,47.7 1599.0,107.4 1611.0,1838.7 1088.2,1874.3 1088.2,1873.0 587.1,1866.2 587.1,1857.8 77.6,1830.8 76.7,1485.0 78.7,785.6 75.6,48.7 1599.2,34.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0065/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6835122708662,41.98543880897571]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67948352243454,41.98547054819175]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67943398047137,41.98194663891849]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68346272890304,41.981914899702446]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p66","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.55"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0066","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"49.7,1886.4 62.0,111.2 63.0,51.4 572.1,58.5 1558.3,66.8 1562.2,82.3 1635.2,794.3 1615.6,1907.7 1036.5,1886.1 1037.6,1891.5 49.7,1886.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0066/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67980338760746,41.98547301699689]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67578261911926,41.985546408087686]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6756680618714,41.98202949671355]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67968883035961,41.98195610562276]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p67","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0067","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"610.5,156.6 610.3,146.7 1107.8,124.9 1108.1,135.7 1610.7,128.4 1615.2,323.9 1616.3,373.2 1541.8,373.5 1545.1,699.7 1551.0,989.2 1563.0,1216.8 1573.8,1845.5 990.6,1840.0 374.3,1844.9 61.0,1841.5 95.3,122.5 610.5,156.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0067/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68716834117882,41.98241090387915]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68313698033363,41.98238120946969]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68318332864727,41.9788548708419]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68721468949246,41.978884565251356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p68","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0068","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"203.3,154.6 707.7,172.4 707.9,180.7 1203.6,178.6 1206.5,362.0 1207.2,400.8 1285.1,400.9 1292.1,723.0 1306.7,1283.6 1357.0,1283.9 1366.2,1834.8 162.4,1854.4 162.2,1843.4 153.2,1221.0 141.9,995.7 136.8,709.2 134.3,386.2 208.1,386.1 207.1,337.4 203.3,154.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0068/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68377197072068,41.982415530120484]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67969912065755,41.982393251618426]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67973389366807,41.97883059715544]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68380674373121,41.978852875657495]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p69","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.54"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0069","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"645.2,1837.0 644.5,1811.4 255.1,1818.0 245.6,1272.8 195.8,1272.5 181.0,717.6 173.9,398.8 96.7,398.8 96.1,360.4 93.0,180.1 604.2,135.8 605.2,175.7 1570.5,149.4 1615.0,341.0 1632.8,1860.5 1040.1,1842.8 768.1,1841.5 649.4,1841.1 645.2,1837.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0069/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68106224576108,41.98240462033104]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67694751254969,41.982380033431156]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67698588883022,41.97878076563859]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68110062204161,41.97880535253847]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0007","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"50.7,102.8 1017.9,99.9 1123.4,98.7 1626.6,97.5 1627.0,145.8 1600.1,148.2 1585.7,1738.3 1635.5,1807.4 1635.7,1841.4 1521.7,1841.8 1122.8,1843.0 46.9,1851.9 19.6,1848.9 19.6,1846.8 21.9,1846.8 48.1,133.7 50.7,102.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.656014340192,41.99166295915286]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65278542206848,41.99349750236454]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64990425682952,41.99065650102934]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65313317495304,41.98882195781766]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p71","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0071","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.4,1815.2 26.5,1802.4 90.5,1802.0 52.0,1558.9 115.5,975.9 52.8,423.2 95.9,172.2 19.9,137.6 19.9,122.8 19.9,115.5 294.4,119.6 904.0,117.2 1480.8,125.0 1484.0,413.5 1489.0,643.2 1490.0,690.6 1639.8,693.8 1640.3,739.2 1641.2,820.9 1640.0,821.0 1641.9,890.0 1642.9,983.1 1641.0,1011.0 1643.4,1028.2 1644.6,1136.8 1641.0,1259.0 1641.8,1828.8 1612.5,1828.6 1057.8,1824.5 565.2,1818.8 26.4,1815.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0071/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68702497755598,41.9792881312582]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68294956521703,41.97927037277003]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68297728178312,41.97570528924707]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68705269412207,41.97572304773524]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p72","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0072","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"199.6,809.4 197.0,681.4 46.0,679.7 37.1,400.6 31.3,121.0 1639.0,81.0 1640.0,107.0 1644.3,111.2 1454.2,112.0 1459.3,398.2 1463.4,583.6 1465.1,678.4 1467.4,861.9 1469.2,901.3 1484.3,950.2 1642.5,1270.0 1642.2,1391.8 1641.0,1392.5 1166.2,1628.0 1182.2,1660.1 798.0,1837.2 219.6,1828.8 210.6,1824.7 203.9,1250.7 206.3,1127.6 198.5,809.5 199.6,809.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0072/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68347974985305,41.97924430230764]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67943475524058,41.979196173120044]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67950987280365,41.97565769451645]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68355486741612,41.97570582370405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0073","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"291.5,1381.4 266.1,1394.2 265.9,1273.7 108.0,957.8 92.8,909.5 87.8,689.0 85.7,595.1 80.8,411.6 74.7,128.5 382.2,125.7 656.0,123.7 1252.7,134.2 1263.6,589.8 1567.7,1348.4 1586.6,1341.2 1601.0,1371.7 973.4,1672.6 615.7,1849.7 563.9,1875.3 314.3,1370.0 291.5,1381.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0073/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68013406242562,41.97923735480199]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67604692849358,41.979175725233524]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67614311705637,41.9756003951259]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68023025098842,41.975662024694365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0075/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p75","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0075/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0075","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"661.1,1948.0 632.3,1948.0 638.0,1887.2 593.1,1850.6 437.9,1919.0 185.4,1921.5 58.7,1878.2 34.5,215.1 77.6,73.5 819.8,28.9 1570.2,65.9 1593.0,110.2 1622.3,99.6 1631.8,681.6 1633.3,913.9 1642.2,1401.2 1641.3,1777.0 1609.3,1776.8 760.7,1772.9 659.2,1823.2 661.1,1948.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0075/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[95.0,1197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.69312928892006,41.973949715851944]}},{"type":"Feature","properties":{"resourceCoords":[1620.0,1197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68940308042762,41.97392174509398]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0076/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p76","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0076/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0076","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"162.0,56.8 1017.1,50.7 1017.1,63.4 1554.8,66.4 1564.2,909.9 1571.0,973.9 1642.9,1124.0 1642.8,1164.2 1235.9,1385.6 1228.5,1370.3 644.4,1684.3 658.9,1713.5 72.5,1808.3 63.8,1761.5 57.4,1761.5 59.4,1389.1 52.0,906.0 51.1,675.8 43.5,98.9 162.0,56.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0076/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68947503415004,41.9760969868581]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68539172704908,41.97607528582515]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68542559553588,41.97250314770653]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68950890263683,41.97252484873949]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0077/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p77","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0077/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0077","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"912.8,1768.2 534.5,1948.0 511.3,1948.0 488.7,1948.0 485.4,1941.1 631.4,1872.0 290.7,1527.2 205.8,1344.6 115.2,1155.2 99.5,1163.5 100.1,1123.2 30.1,971.9 24.1,907.7 25.9,62.4 518.3,73.9 1073.0,84.6 1111.2,85.3 1111.3,89.5 1642.0,108.8 1623.9,137.0 1540.5,662.7 1513.5,662.1 1540.5,1338.7 1581.0,1424.7 1561.3,1434.0 1542.7,1393.7 1544.6,1441.9 1645.0,1394.4 1645.0,1410.0 1645.0,1420.4 936.9,1756.8 912.8,1768.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0077/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6857340197062,41.97606897865032]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68165880368011,41.97608757457578]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68162978116558,41.972522529866545]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.68570499719168,41.972503933941084]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p78","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0078/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0078","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1640.0,130.0 1640.0,147.0 1640.0,168.0 1640.0,187.0 1640.0,193.0 1640.1,206.7 1640.3,639.2 1644.0,1195.3 1613.3,1196.4 1608.5,1283.3 1644.0,1281.5 1644.0,1376.0 1644.0,1380.5 1643.0,1405.0 1643.9,1406.8 1642.1,1829.7 1084.8,1835.9 523.0,1843.8 517.5,1387.5 517.2,1329.9 516.8,1270.1 80.3,1277.5 84.6,1268.2 91.0,1254.2 21.4,1255.2 20.9,1187.7 20.6,1161.3 275.1,541.8 299.0,553.5 589.9,114.8 1068.3,122.8 1068.2,87.7 1639.0,80.9 1640.0,107.0 1640.0,130.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0078/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[538.0,1866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68004415391394,41.97285946045353]}},{"type":"Feature","properties":{"resourceCoords":[1604.0,1866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67763980620487,41.97369098342203]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0079/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p79","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0079/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0079","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"257.8,752.4 222.0,754.1 227.5,666.6 258.4,665.7 258.4,106.4 315.9,106.4 709.0,106.3 1402.4,115.0 1391.3,622.4 1388.1,782.0 1391.8,1009.4 1389.2,1245.4 1393.5,1865.2 667.1,1866.7 590.4,1868.5 278.1,1866.4 257.8,1866.2 257.5,1831.9 256.1,1303.8 252.2,1303.8 257.2,847.5 257.8,752.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0079/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[250.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67700526250002,41.97285051878751]}},{"type":"Feature","properties":{"resourceCoords":[1402.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6744301862842,41.97375669350053]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p80","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0080/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0080","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.5,1229.7 41.3,988.2 39.5,755.4 44.2,591.9 61.0,38.3 501.4,83.9 1444.9,48.1 1513.4,147.9 1462.4,356.9 1513.2,648.5 1588.2,734.9 1600.9,1191.5 1520.5,1720.0 1525.3,1830.8 1582.7,1850.2 1549.4,1858.5 1411.6,1869.3 614.9,1863.2 35.5,1864.2 36.5,1229.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0080/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[618.0,1290.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6737843,41.9751303]}},{"type":"Feature","properties":{"resourceCoords":[1213.0,1868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6718822,41.9746612]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p81","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0081","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"140.3,131.4 193.5,20.4 305.2,20.7 1052.7,397.5 1086.6,414.6 1073.6,460.1 1634.9,632.5 1634.8,774.7 1629.3,1428.8 1611.0,1428.8 1593.0,1924.0 1586.2,1915.2 551.1,1917.1 78.2,1817.7 39.7,455.4 72.7,186.4 114.3,119.5 140.3,131.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0081/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1285.0,1749.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68746279811897,41.97081666361686]}},{"type":"Feature","properties":{"resourceCoords":[1079.0,401.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6893810984721,41.97288399266191]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0082/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p82","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0082/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0082","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1186.7,34.2 1190.7,237.4 1192.5,432.3 1354.0,871.7 1198.4,875.0 1238.7,900.5 1642.3,891.4 1401.3,906.4 1480.0,1453.3 1569.7,1451.6 1341.7,1925.2 1225.5,1925.6 1222.0,1925.6 1170.6,1908.8 659.4,1665.5 277.9,1480.7 123.2,1402.7 71.8,1378.2 78.4,894.7 96.3,894.2 87.2,256.0 83.5,85.6 722.9,47.7 723.0,64.2 1186.7,34.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0082/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[734.0,880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6855855975922,41.972150138634284]}},{"type":"Feature","properties":{"resourceCoords":[74.0,880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68710869428101,41.97163124278517]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0083/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p83","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0083/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0083","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"144.6,72.5 22.9,65.3 22.9,63.8 1617.5,51.1 1617.4,110.6 1617.4,115.3 1617.3,167.9 1618.7,622.2 1615.9,897.1 1613.8,1888.8 1613.8,1926.0 1582.0,1926.0 1215.8,1745.1 894.0,1588.4 451.1,1366.8 196.0,1252.9 21.4,1168.2 21.4,1147.5 21.5,1105.8 68.7,1106.3 307.4,628.8 216.4,629.2 144.6,72.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0083/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1122.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68061810966472,41.97154574342785]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67951024734161,41.971937983511715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0084/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p84","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0084/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0084","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"663.7,110.2 1233.0,112.0 1230.5,644.5 1251.0,679.5 1565.8,684.0 1585.1,683.7 1548.5,1822.7 1374.0,1817.6 1340.8,1819.5 1278.1,1832.0 1107.8,1833.5 986.1,1839.0 856.7,1834.5 782.8,1818.2 637.4,1751.0 81.9,1454.9 82.2,1401.0 89.5,390.4 93.8,110.2 663.7,110.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0084/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[654.0,1257.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6776419,41.9714458]}},{"type":"Feature","properties":{"resourceCoords":[1233.0,112.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6775834,41.9737846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0085/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p85","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0085/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0085","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.3,1221.2 25.2,1212.2 25.2,1187.0 57.1,1185.2 230.3,1190.0 265.1,59.7 322.9,58.6 1049.8,61.7 1616.2,59.4 1610.9,1715.5 1610.3,1748.3 1077.1,1730.1 1038.2,1698.6 1037.3,1798.0 945.8,1727.3 485.3,1752.0 487.9,1939.9 488.0,1948.0 479.9,1948.0 415.1,1939.8 415.0,1939.0 408.6,1939.0 189.1,1231.8 165.8,1227.2 111.3,1221.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0085/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1610.0,1768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6713719,41.9713672]}},{"type":"Feature","properties":{"resourceCoords":[246.0,60.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6762387,41.9731091]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0086__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p86 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"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":"6672.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0086__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0086","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"57.3,1764.9 341.2,1765.7 628.5,1762.3 630.3,1795.3 651.3,1759.2 1080.5,1842.6 1153.9,1756.4 1377.5,1846.9 1527.5,1837.6 1594.2,1562.2 1512.7,1394.0 1557.0,792.7 1447.9,716.4 1052.3,681.3 950.0,624.5 899.3,527.5 865.9,309.4 942.9,63.2 832.0,68.6 58.0,67.0 58.0,1712.7 57.3,1764.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0086__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[58.0,1202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6719729,41.9723071]}},{"type":"Feature","properties":{"resourceCoords":[58.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.673188,41.9742011]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0087__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p87 [2]","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":"6672.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0087__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0087","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"25.1,29.2 23.9,77.0 97.0,134.6 53.1,698.9 90.6,988.5 858.1,1091.0 1000.3,1093.5 1026.4,1113.5 1086.7,1803.9 994.4,1817.2 1584.2,1865.2 1584.3,1344.3 1583.8,72.8 1385.3,71.6 1369.2,37.9 1346.5,39.4 1345.7,39.5 1233.2,52.4 645.1,44.6 204.8,35.7 25.1,29.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0087__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1590.0,1285.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68262185363666,41.96848794899312]}},{"type":"Feature","properties":{"resourceCoords":[1590.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68261812141219,41.97072819160907]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0088/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p88","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0088/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0088","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"250.5,1834.5 247.8,1327.2 240.0,60.0 524.6,51.0 1029.3,57.4 1394.2,58.0 1398.8,313.7 1399.0,794.5 1404.8,1292.8 1406.0,1790.0 1012.6,1787.2 832.9,1791.0 833.1,1814.3 250.5,1834.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0088/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[830.0,1288.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6812077,41.9684443]}},{"type":"Feature","properties":{"resourceCoords":[240.0,60.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6826335,41.9706904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0089/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p89","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0089/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0089","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"116.5,1355.8 107.0,855.0 103.3,371.6 96.8,114.7 515.2,114.8 544.5,100.3 551.5,114.7 1184.2,131.1 1345.2,126.2 1419.0,107.6 1537.3,53.4 1541.5,51.1 1564.5,351.8 1569.0,351.9 1574.3,856.9 1592.8,1357.4 1288.1,1357.0 1230.0,1357.0 1235.2,1856.1 962.4,1856.4 687.4,1853.0 405.1,1855.8 121.3,1855.6 116.5,1355.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0089/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1230.0,1357.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6770829,41.9683975]}},{"type":"Feature","properties":{"resourceCoords":[107.0,855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6798043,41.9693367]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.59"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0009","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"72.8,49.1 1606.8,49.5 1621.0,1870.8 1229.0,1871.1 1229.3,1893.6 1004.4,1893.8 866.5,1888.1 50.3,1903.3 50.2,1851.5 34.9,1851.5 72.8,49.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.65033400849637,41.995016182488904]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6471181519546,41.99683940905839]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6442545986672,41.994010059123546]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.64747045520897,41.99218683255406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0090/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p90","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0090/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0090","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1559.5,1637.5 1509.0,1670.4 1400.0,1733.6 1310.5,1752.8 1242.0,1753.6 989.4,1739.5 753.6,1740.3 137.4,1737.7 120.5,1238.5 116.8,734.7 112.3,734.7 90.3,434.7 192.9,377.9 345.2,300.5 383.2,290.7 396.0,261.4 396.9,260.9 408.2,283.6 490.2,253.2 539.3,235.4 542.3,234.3 565.4,228.0 1081.1,770.2 1157.5,743.7 1276.0,975.1 1565.7,1541.0 1602.8,1607.7 1618.4,1636.1 1559.5,1637.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0090/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.676487,41.9715496]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6724081,41.971516]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67246080000001,41.9679724]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6765397,41.968006]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0091/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p91","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.65"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0091/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0091","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.0,1288.0 55.7,698.6 53.0,449.1 51.1,273.1 482.5,251.3 568.1,317.8 569.1,224.7 605.5,254.3 1104.9,273.0 1104.5,291.4 1372.2,293.8 1643.0,292.4 1643.0,293.0 1643.1,295.3 1641.0,296.0 1641.0,329.4 1622.3,360.9 1622.0,1843.5 1573.7,1911.7 1352.2,1911.3 1348.4,1917.2 1095.1,1882.2 1095.1,1880.9 561.7,1868.5 561.6,1877.9 80.3,1886.5 80.3,1845.6 73.5,1553.0 67.9,1426.5 65.2,1358.5 62.0,1288.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0091/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1096.0,791.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67081716100257,41.970478087708265]}},{"type":"Feature","properties":{"resourceCoords":[1096.0,230.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67146281201565,41.9714682580005]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0093/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p93","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.68"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0093/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0093","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"54.6,1873.8 103.3,1116.7 57.0,484.8 122.9,411.1 143.9,131.8 253.9,57.9 429.6,39.2 1033.2,87.0 1033.1,75.2 1611.8,57.1 1614.8,484.0 1615.1,523.3 1590.8,523.1 1583.0,1879.0 1034.0,1894.4 1034.1,1888.2 620.8,1911.8 54.6,1873.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0093/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1034.0,518.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6826395,41.9666426]}},{"type":"Feature","properties":{"resourceCoords":[1034.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6826462,41.9652439]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0094/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p94","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0094/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0094","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"144.1,1924.8 104.6,1924.2 128.9,516.1 153.3,516.6 153.5,477.2 155.6,27.2 217.8,26.8 334.1,26.1 724.8,34.6 1005.2,41.1 1284.1,44.5 1281.2,540.1 1241.5,539.3 1241.0,607.0 1584.9,1365.6 1645.0,1365.9 1645.0,1873.0 878.2,1891.8 145.2,1825.0 144.1,1924.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0094/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1286.0,1286.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.67839391669791,41.965233801209905]}},{"type":"Feature","properties":{"resourceCoords":[142.0,521.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.68123276693171,41.96662076196111]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0095/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p95","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0095/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0095","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.5,1491.0 610.5,1623.7 610.5,1679.3 610.7,1885.0 564.1,1938.9 367.5,1937.8 21.0,1185.7 21.0,1167.8 21.1,1117.3 61.2,1117.9 61.0,617.7 335.1,625.6 607.2,629.7 610.0,132.0 668.0,133.0 1587.8,148.9 1590.3,399.8 1590.0,782.4 1607.3,892.0 1606.7,974.4 1613.5,1491.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0095/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[610.0,1126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6770781,41.9665898]}},{"type":"Feature","properties":{"resourceCoords":[610.0,132.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6770829,41.9683975]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0096/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p96","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0096/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0096","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1569.1,1436.4 1566.1,1442.4 1420.9,1442.4 1417.9,1433.4 1161.0,1434.5 1161.9,1553.5 696.5,1554.4 193.1,1552.5 179.1,943.4 178.9,861.2 160.6,752.0 157.1,370.4 152.1,120.2 387.2,120.2 639.0,135.0 707.4,134.4 796.6,115.5 905.6,52.8 956.0,20.2 957.0,26.0 1007.0,26.0 1012.0,19.1 1014.8,19.0 1034.3,54.8 1100.1,174.1 1246.2,453.0 1417.7,798.8 1439.5,855.0 1464.8,959.7 1479.5,1082.4 1477.0,1383.7 1499.2,1428.4 1569.1,1436.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0096/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1161.0,1429.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6722427,41.9659693]}},{"type":"Feature","properties":{"resourceCoords":[639.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6734974,41.9683362]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0097/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p97","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0097/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0097","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"497.3,1338.7 25.1,1036.2 25.1,991.9 25.1,986.4 161.6,719.0 203.0,603.0 227.0,498.4 232.5,438.5 232.6,97.3 751.5,91.6 751.6,81.6 1326.6,98.9 1326.7,100.3 1599.7,139.7 1571.2,183.2 1568.8,1487.3 1596.6,1599.5 1644.4,1622.9 1644.6,1710.5 1314.1,1708.9 1314.0,1726.6 1017.9,1621.3 1049.2,1559.0 523.2,1287.9 497.3,1338.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0097/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67258262742965,41.96764800142293]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.66892212430243,41.96899096494455]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.6668264419615,41.96578830277209]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.67048694508873,41.96444533925046]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0099/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cedar Rapids, Iowa | 1913 | sanborn02597_004 p99","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T23:45:00Z","modified":"2026-10-17T23:45:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0099/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0099","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.3,1725.6 81.1,1201.2 78.7,1018.3 73.3,1007.0 21.2,1009.2 22.1,495.3 71.1,437.2 68.5,231.9 67.8,176.4 1067.7,31.9 1070.1,125.9 1574.1,126.8 1575.0,957.0 1587.2,1792.8 1065.7,1786.0 1066.5,1948.0 1064.7,1948.0 1061.8,1948.0 1058.2,1848.0 651.1,1898.1 624.0,1901.5 623.8,1872.3 81.4,1764.8 81.3,1725.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025971913:02597_1913-0099/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1079.0,1786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6746374,41.962735]}},{"type":"Feature","properties":{"resourceCoords":[1575.0,957.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.6734023,41.9642356]}}]}}]}