{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02557_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Albia, Iowa | 1933 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"10"},{"label":"placed","value":"6"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef-snap 6"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p3__2 (tier 1, 41.02873,-92.81147 +/-106m); p3__3 (tier 1, 41.02950,-92.81044 +/-108m); p6__1 (tier 1, 41.02381,-92.80840 +/-424m); p7__2 (tier 1, 41.02852,-92.81493 +/-278m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1933 | sanborn02557_007 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:16:24Z","modified":"2026-10-18T17:16:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1046.3,1742.1 535.2,1735.8 17.6,1732.2 15.8,1205.0 17.6,589.2 399.3,174.9 1045.3,182.1 1571.6,184.6 1571.3,703.3 1573.7,1215.4 1570.2,1745.5 1046.3,1742.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[529.0,1213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80839447026626,41.02618458768864]}},{"type":"Feature","properties":{"resourceCoords":[1556.0,698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80591000553915,41.02714600499159]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1933 | sanborn02557_007 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T17:16:24Z","modified":"2026-10-18T17:16:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1563.9,429.8 1571.7,276.9 1550.3,96.9 1466.7,37.0 343.6,26.3 68.1,100.1 38.2,145.7 17.4,406.8 27.7,1820.9 43.2,1870.0 73.5,1873.5 73.8,1883.3 276.4,1868.0 276.1,1852.3 544.6,1847.6 789.4,1848.2 785.0,1531.8 977.7,1315.7 1309.7,1313.8 1580.2,1310.7 1574.0,1039.2 1567.9,684.7 1564.7,555.5 1562.3,462.4 1561.4,429.8 1563.9,429.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1043.0,1577.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80843288143575,41.027151586758805]}},{"type":"Feature","properties":{"resourceCoords":[1302.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80721700174595,41.026224445435076]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1933 | sanborn02557_007 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:16:24Z","modified":"2026-10-18T17:16:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.5,746.8 79.2,399.0 78.8,272.3 78.5,148.8 80.9,148.9 97.3,56.2 153.3,34.8 857.3,89.8 934.7,120.6 996.3,221.7 1233.2,251.2 1490.4,418.2 1524.2,415.5 1579.0,769.8 1586.5,769.9 1586.0,1029.4 1558.1,1029.3 1529.8,1296.2 1520.3,1296.2 1499.7,1845.1 1076.1,1813.9 1002.9,1812.5 754.8,1809.0 576.9,1809.7 330.6,1805.8 72.4,1800.1 75.7,1532.9 76.0,1274.7 77.7,1013.2 77.5,746.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[756.0,1802.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8025569868305,41.02525582656017]}},{"type":"Feature","properties":{"resourceCoords":[1255.0,1545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80017011836169,41.02621744318174]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1933 | sanborn02557_007 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.71"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:16:24Z","modified":"2026-10-18T17:16:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"153.1,1912.0 152.1,1912.0 72.0,1753.9 81.3,1753.7 82.7,960.8 92.4,960.4 111.3,688.0 139.8,687.1 130.8,423.3 123.2,423.5 54.5,65.4 457.0,18.7 963.3,45.9 1498.8,27.1 1569.7,172.8 1582.1,946.1 1550.6,1422.3 1577.5,1448.2 1612.0,1843.9 1612.0,1847.5 1590.5,1849.9 1575.4,1886.0 1420.8,1893.0 579.1,1887.9 461.5,1856.4 152.4,1874.2 154.7,1912.0 153.1,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[819.0,1712.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.79549469254766,41.02439614023696]}},{"type":"Feature","properties":{"resourceCoords":[60.0,945.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.79901505726382,41.027194657696974]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1933 | sanborn02557_007 p6 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T17:16:24Z","modified":"2026-10-18T17:16:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.4,106.6 81.2,223.6 86.0,618.1 41.9,837.8 60.9,994.1 109.4,1057.2 277.0,1094.0 679.0,1093.0 679.3,1095.3 681.0,1095.3 681.0,1108.9 724.7,1461.3 769.6,1561.7 944.8,1654.3 941.5,1840.5 1540.9,1876.1 1544.8,1912.0 1562.9,1912.0 1580.9,1482.2 1593.0,1482.2 1578.7,594.2 1571.5,339.6 1306.5,340.9 1047.8,340.8 786.0,342.1 782.0,75.3 541.1,73.6 276.7,77.0 276.9,92.5 77.4,106.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1313.0,1208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80710494312288,41.022080787862144]}},{"type":"Feature","properties":{"resourceCoords":[172.0,89.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.81257203646611,41.026147054818715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1933 | sanborn02557_007 p7 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T17:16:24Z","modified":"2026-10-18T17:16:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"71.1,67.5 76.4,327.1 83.8,1231.7 71.4,1231.6 49.6,1669.3 31.2,1670.2 49.1,1852.6 269.1,1838.6 388.1,1562.4 415.5,1403.3 549.3,1203.0 678.8,1105.2 884.0,859.1 930.2,803.1 930.5,803.4 930.6,803.1 1040.0,917.5 1119.6,925.5 1244.0,1058.9 1383.2,1272.0 1371.0,1431.2 1537.8,1439.7 1576.0,1375.4 1611.9,1049.5 1593.6,495.9 1591.0,495.8 1514.7,334.9 1524.0,334.9 1530.6,99.6 1097.0,71.8 1022.5,71.1 768.8,70.0 587.0,72.5 335.1,70.8 71.1,67.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[761.0,82.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80259877749833,41.02518735519877]}},{"type":"Feature","properties":{"resourceCoords":[1265.0,341.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.80021562804409,41.02427557590879]}}]}}]}