{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02557_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Albia, Iowa | 1947 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"11"},{"label":"placed","value":"6"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef-snap 3, georef 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1 (tier 4, 41.02606,-92.80453 +/-760m); p3__2 (tier 1, 41.02973,-92.81158 +/-128m); p3__3 (tier 1, 41.02946,-92.81049 +/-110m); p6__1 (tier 1, 41.01558,-92.80768 +/-204m); p7__2 (tier 1, 41.02825,-92.81495 +/-257m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1947 | sanborn02557_008 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:35:51Z","modified":"2026-09-23T08:35:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1577.2,172.2 1576.1,1721.6 24.3,1708.4 26.1,158.1 1577.2,172.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80972217676883,41.028379349223485]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80580035074613,41.02840627954453]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80575831060796,41.024872601930795]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80968013663066,41.024845671609754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0003__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 | 1947 | sanborn02557_008 p3 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"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":"2026-09-23T08:35:51Z","modified":"2026-09-23T08:35:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"790.1,1822.1 782.8,1296.7 1570.8,1290.0 1551.2,419.5 1613.0,418.6 1613.0,0.0 -0.0,-0.0 -0.0,1887.8 283.0,1826.8 790.1,1822.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1051.0,1559.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8083824,41.0271324]}},{"type":"Feature","properties":{"resourceCoords":[1310.0,1815.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8071534,41.0262001]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1947 | sanborn02557_008 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:35:51Z","modified":"2026-09-23T08:35:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.3,1782.2 82.3,148.8 143.4,149.2 146.5,0.0 1613.0,0.0 1613.0,349.8 1584.2,349.3 1586.2,1279.7 1509.5,1279.6 1511.3,1512.2 1479.8,1538.0 1409.3,1537.0 1402.5,1913.0 1008.5,1913.0 1008.2,1791.8 81.3,1782.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.806348532277,41.0317741460827]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79854308802202,41.03184490704421]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79843262239146,41.024812153774754]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80623806664644,41.02474139281324]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Albia, Iowa | 1947 | sanborn02557_008 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:35:51Z","modified":"2026-09-23T08:35:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"196.8,1913.0 196.9,1721.7 -0.0,1724.6 -0.0,1205.3 71.4,1205.0 102.8,1178.3 96.7,942.9 174.3,941.5 155.3,0.0 1613.0,0.0 1613.0,1913.0 196.8,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79940456556555,41.03056298861288]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79169346741571,41.030526728954555]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79175007168848,41.023578855039815]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79946116983832,41.02361511469814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0006__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 | 1947 | sanborn02557_008 p6 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"19"},{"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":"2026-09-23T08:35:51Z","modified":"2026-09-23T08:35:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1500.1,1913.0 1498.3,1458.7 1591.0,1457.5 1560.3,329.6 784.9,338.5 778.7,75.2 279.8,81.0 -0.0,142.1 0.0,1080.6 682.2,1080.6 684.8,1913.0 1500.1,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1312.0,1194.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8071062,41.0220629]}},{"type":"Feature","properties":{"resourceCoords":[1578.0,948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8057968,41.0229552]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0007__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 | 1947 | sanborn02557_008 p7 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"},{"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":"2026-09-23T08:35:51Z","modified":"2026-09-23T08:35:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,337.7 1415.0,340.7 1414.9,200.4 1014.1,207.9 1011.5,83.8 68.0,91.8 94.8,1246.0 -0.0,1246.9 -0.0,1913.0 178.0,1913.0 391.0,1913.0 455.7,1913.0 447.3,1384.7 810.6,943.5 1060.9,941.1 1300.5,1188.0 1299.5,1913.0 1613.0,1913.0 1613.0,337.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571947:02557_1947-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[761.0,343.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8025656,41.0243074]}},{"type":"Feature","properties":{"resourceCoords":[1263.0,343.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8001786,41.024295]}}]}}]}