{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02557_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Albia, Iowa | 1933 | mapsnap generated fit (2026-09-23)","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":"10"},{"label":"placed","value":"7"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef-snap 4, georef 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1 (tier 4, 41.02592,-92.80522 +/-828m); p3__2 (tier 2, 41.02627,-92.81149 +/-100m); p3__3 (tier 1, 41.03260,-92.81159 +/-108m)"}],"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"}],"created":"2026-09-23T07:41:47Z","modified":"2026-09-23T07:41:47Z","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=\"1573.7,187.8 1571.5,1742.5 14.4,1728.3 17.2,172.6 1573.7,187.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80970102673973,41.02840516842948]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80579276933634,41.028433952183605]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80574783583543,41.02491250204287]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80965609323883,41.02488371828875]}}]}},{"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":"7"},{"label":"intersections","value":"16"},{"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":"2026-09-23T07:41:47Z","modified":"2026-09-23T07:41:47Z","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=\"165.8,1862.1 154.2,1583.2 777.1,1577.6 774.8,1312.6 1565.9,1309.0 1549.5,435.1 1613.0,434.4 1613.0,0.0 0.0,-0.0 -0.0,1900.0 165.8,1862.1\" /></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":[-92.8083824,41.0271324]}},{"type":"Feature","properties":{"resourceCoords":[1302.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8071534,41.0262001]}}]}},{"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"}],"created":"2026-09-23T07:41:47Z","modified":"2026-09-23T07:41:47Z","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=\"69.8,1797.9 75.5,151.5 138.5,152.1 141.4,0.0 1613.0,0.0 1613.0,351.6 1588.8,350.7 1588.2,414.3 1588.0,1295.5 1510.8,1295.3 1511.9,1529.8 1480.1,1555.7 1434.4,1554.9 1427.8,1737.7 1250.5,1737.2 1248.2,1802.8 1213.1,1814.1 69.8,1797.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80631475098721,41.031779362556634]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.7985708439743,41.031865991244246]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79843560702557,41.02488868626843]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80617951403848,41.02480205758082]}}]}},{"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"}],"created":"2026-09-23T07:41:47Z","modified":"2026-09-23T07:41:47Z","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=\"153.9,1749.0 -0.0,1753.5 -0.0,1228.3 46.4,1227.4 77.8,1200.0 68.0,961.9 146.5,959.4 112.7,0.0 1613.0,0.0 1613.0,1913.0 159.3,1913.0 153.9,1749.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79919457833219,41.03059418052463]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.7915736293382,41.03047073462061]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79176633820335,41.02360407925576]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79938728719733,41.023727525159785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0006__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 p6 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4376.0"},{"label":"split_canvas_w","value":"2721.6"},{"label":"split_canvas_h","value":"3276.0"}],"created":"2026-09-23T07:41:47Z","modified":"2026-09-23T07:41:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0006__1/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=\"470.1,1776.5 598.7,1775.0 595.9,1587.0 587.4,1193.4 326.6,1195.7 14.9,1199.5 21.2,1338.7 211.3,1777.5 470.1,1776.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1094.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.81275416442104,41.027885659159246]}},{"type":"Feature","properties":{"resourceCoords":[680.4,1094.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.8062703872763,41.02784609967732]}},{"type":"Feature","properties":{"resourceCoords":[680.4,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80633362365371,41.021947871477835]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.81281740079845,41.02198743095976]}},{"type":"Feature","properties":{"resourceCoords":[463.3,1459.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8083677,41.0252261]}},{"type":"Feature","properties":{"resourceCoords":[463.3,1459.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.8083677,41.0252261]}}]}},{"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":"8"},{"label":"intersections","value":"20"},{"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":"2026-09-23T07:41:47Z","modified":"2026-09-23T07:41:47Z","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=\"1517.1,1478.0 1593.5,1477.7 1572.5,333.6 1048.2,334.6 1045.3,590.8 787.2,593.5 792.5,961.7 543.9,964.4 543.5,337.4 280.9,334.8 276.1,70.1 -0.0,127.7 0.0,1095.1 679.2,1094.0 680.4,1913.0 854.0,1913.0 1523.0,1913.0 1517.1,1478.0\" /></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":[-92.8071062,41.0220629]}},{"type":"Feature","properties":{"resourceCoords":[172.0,89.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.812571,41.0261219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0007/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","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:41:47Z","modified":"2026-09-23T07:41:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0007/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=\"78.5,1233.0 73.0,66.1 1248.1,79.2 1284.1,67.4 1286.3,0.0 1468.6,0.0 1457.2,343.1 1613.0,343.6 1613.0,1913.0 -0.0,1913.0 -0.0,1232.2 78.5,1233.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025571933:02557_1933-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.80619706301518,41.025457228578034]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79866235248005,41.02552399406271]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.79855813401028,41.01873453628923]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.8060928445454,41.018667770804555]}}]}}]}