{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02790_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ottumwa, Iowa | 1917 | 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":"52"},{"label":"placed","value":"33"},{"label":"unplaced","value":"19"},{"label":"fit sources","value":"georef 21, georef-snap 12"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"10 sheet(s) cut into 29 panels"},{"label":"unplaced pages","value":"p1 (tier 4, 41.01260,-92.41533 +/-2334m); p16__2 (tier 1, 41.00970,-92.40634 +/-100m); p18__2 (tier 1, 41.00869,-92.39624 +/-100m); p18__3 (tier 2, 41.00909,-92.39612 +/-216m); p22__2 (tier 1, 41.01165,-92.40128 +/-142m); p26__2 (tier 1, 41.00687,-92.42218 +/-108m); p2__1 (tier 1, 41.02912,-92.42636 +/-246m); p2__2 (tier 1, 41.02962,-92.42345 +/-121m); p2__3 (tier 1, 41.02898,-92.42483 +/-104m); p30__3 (tier 1, 40.99771,-92.42578 +/-141m); p32__2 (tier 3, 41.00605,-92.41326 +/-620m); p32__3 (tier 1, 41.00455,-92.41382 +/-132m); p33__1 (tier 1, 41.00450,-92.37588 +/-100m); p33__2 (tier 1, 41.00584,-92.37466 +/-100m); p33__3 (tier 1, 41.00474,-92.37589 +/-100m); p33__4 (tier 1, 41.00513,-92.37589 +/-115m); p33__5 (tier 1, 41.00538,-92.37419 +/-100m); p33__6 (tier 1, 41.00559,-92.37340 +/-145m); p33__7 (tier 1, 41.00582,-92.37437 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.2,1320.4 160.6,100.4 1352.6,84.7 1354.2,475.1 1497.2,473.7 1497.9,1693.0 1613.0,1718.8 1613.0,1913.0 269.8,1913.0 269.6,1318.7 145.2,1320.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41315422458285,41.02164105932089]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41032596351901,41.019540466757164]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4136047735582,41.016991839828414]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41643303462205,41.01909243239214]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p11","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"144.4,465.1 -0.0,465.0 -0.0,70.5 1501.3,73.1 1490.0,1810.1 1353.9,1805.8 1353.8,1913.0 255.5,1913.0 256.3,1724.3 140.1,1696.8 144.4,465.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[784.0,784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4107572,41.0178228]}},{"type":"Feature","properties":{"resourceCoords":[1490.0,1580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4108631,41.015869]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p12","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"139.7,106.0 1496.1,114.3 1495.8,624.7 1416.9,623.8 1408.5,1913.0 -0.0,1913.0 -0.0,1113.3 134.3,1117.4 139.7,106.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[817.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4083047,41.0160369]}},{"type":"Feature","properties":{"resourceCoords":[133.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4095199,41.0169218]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,33.1 1613.0,1871.1 3.9,1882.8 18.7,147.2 698.7,138.2 852.9,-0.0 1580.6,-0.0 1613.0,33.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40623700263544,41.01947510586858]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40336412669237,41.01733361551053]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40670666230127,41.01474469832362]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40957953824434,41.01688618868167]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1667.8 937.2,1662.2 777.1,1803.4 76.2,1806.8 79.0,1352.3 -0.0,932.6 -0.0,0.0 1613.0,-0.0 1613.0,1667.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4035563900414,41.02173981171381]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40074665256006,41.01967968681833]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40396231293784,41.0171477647968]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40677205041918,41.01920788969228]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p15","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,119.7 1613.0,100.0 1613.0,1266.9 1458.9,1266.4 1466.1,1913.0 -0.0,1913.0 -0.0,119.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[771.0,1242.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4086962,41.0120967]}},{"type":"Feature","properties":{"resourceCoords":[771.0,116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4067751,41.0135791]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p16 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"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":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"153.4,1263.2 -0.0,1261.0 -0.0,1913.0 100.0,1913.0 312.0,1913.0 948.0,1913.0 946.6,1198.4 1613.0,1200.1 1613.0,-0.0 1447.6,-0.0 1077.0,103.5 166.3,101.3 153.4,1263.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[655.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4063774,41.0103418]}},{"type":"Feature","properties":{"resourceCoords":[655.0,108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4044243,41.0118827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"177.3,1913.0 -0.0,1913.0 -0.0,984.5 89.7,1017.9 97.1,50.8 581.1,45.9 581.2,0.0 1613.0,0.0 1613.0,75.7 1549.5,77.0 1550.4,1517.0 1363.9,1508.6 1074.1,1414.5 456.6,1160.3 174.9,1161.2 177.3,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40057691066829,41.0122056474398]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.39661499130916,41.01219197088832]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.39663633611917,41.00862128910399]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4005982554783,41.008634965655475]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p18 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"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":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"578.4,1783.3 625.7,1805.4 623.9,1913.0 1613.0,1913.0 1613.0,982.0 1069.9,981.3 1070.2,462.4 955.3,464.5 955.3,0.0 104.2,0.0 76.5,1476.0 570.0,1476.0 578.4,1783.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[570.0,1476.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.3955949,41.0093743]}},{"type":"Feature","properties":{"resourceCoords":[76.0,1476.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.3967856,41.0093609]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p19","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1613.0,0.0 1613.0,280.8 1260.5,1184.1 1259.3,1853.2 958.6,1866.3 937.8,1913.0 0.0,1913.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40016585031647,41.00703762689731]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4001602189778,41.01003673214576]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.39544632335426,41.01003169267886]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.39545195469293,41.00703258743041]}},{"type":"Feature","properties":{"resourceCoords":[69.0,1868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.3955626,41.007161]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1593.3,820.0 1601.9,1859.8 914.5,1872.4 914.1,1705.4 267.7,1723.9 38.5,1713.7 33.5,1274.8 33.4,1271.2 -0.0,1272.0 -0.0,0.0 1380.7,-0.0 1381.1,259.1 1613.0,488.9 1593.3,820.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41271646784087,41.02989400287594]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40718338255012,41.02569355471071]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41374044914161,41.02070798715351]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41927353443236,41.024908435318736]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1577.2,1847.5 209.1,1866.8 210.1,886.2 214.9,880.6 230.8,645.2 -0.0,412.9 -0.0,0.0 1613.0,-0.0 1613.0,393.8 1533.5,394.5 1534.5,857.3 1579.8,1076.1 1577.2,1847.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40747712891176,41.02668731411651]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40195658160569,41.0225624306545]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.40839537854029,41.01758792079954]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41391592584637,41.02171280426155]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p22 [1]","metadata":[{"label":"streets","value":"10"},{"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":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.0,1443.0 98.9,1526.2 -0.0,1528.3 -0.0,1913.0 279.2,1913.0 299.0,1893.4 307.8,1913.0 346.0,1913.0 669.9,1594.9 843.2,1766.3 859.8,1750.0 863.4,1753.5 1163.4,1310.3 1227.4,1110.0 1613.0,816.1 1613.0,112.5 1601.5,125.3 1567.4,91.9 1273.8,98.1 1176.3,194.8 1134.8,153.8 274.8,164.8 271.8,28.9 13.5,33.3 41.9,1300.5 97.0,1443.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[639.0,368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4046772,41.0152208]}},{"type":"Feature","properties":{"resourceCoords":[34.0,1046.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4044243,41.0118827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p23 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"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":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"368.6,1904.5 1613.0,1913.0 1613.0,1371.5 1181.7,1370.8 1257.2,987.2 1613.0,985.4 1613.0,0.0 686.1,0.0 -0.0,-0.0 -0.0,1614.3 56.8,1566.3 368.6,1904.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[784.0,1558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4161952,41.0100416]}},{"type":"Feature","properties":{"resourceCoords":[483.0,1167.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.417087,41.010739]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p23 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"4726.8"},{"label":"split_canvas_y","value":"3941.6"},{"label":"split_canvas_w","value":"1725.2"},{"label":"split_canvas_h","value":"1544.4"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,985.4 1257.2,987.2 1181.7,1370.8 1613.0,1371.5 1613.0,985.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1181.7,985.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42984084710555,40.99483543098806]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,985.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42877633911797,40.99483456885214]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1371.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42877736267162,40.99411500640483]}},{"type":"Feature","properties":{"resourceCoords":[1181.7,1371.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4298418706592,40.99411586854075]}},{"type":"Feature","properties":{"resourceCoords":[1581.0,1026.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4288553,40.9947584]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 864.6,0.0 1143.6,246.9 1613.0,235.0 1613.0,1673.8 1589.0,1673.7 1588.5,1826.1 536.0,1812.3 535.7,1913.0 26.2,1913.0 36.7,742.1 -0.0,741.6 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42002134026808,41.00974639327853]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41609809944033,41.00978386308912]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41603962299628,41.00624790820088]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41996286382403,41.0062104383903]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p25","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1729.5 541.5,1728.0 541.9,1634.5 32.1,1636.7 36.1,248.8 541.8,251.4 541.5,145.0 1586.1,152.3 1585.7,0.0 1613.0,0.0 1613.0,1729.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[542.0,1728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.418637,41.003481]}},{"type":"Feature","properties":{"resourceCoords":[542.0,145.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4186622,41.006409]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p26 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"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":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"58.0,1856.0 1514.5,1856.0 1506.2,0.0 715.1,0.0 0.0,766.3 -0.0,914.4 132.7,913.3 135.5,1252.5 56.8,1327.5 58.0,1856.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[58.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.423511,41.0048983]}},{"type":"Feature","properties":{"resourceCoords":[1514.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4198928,41.004896]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1549.6,235.0 1557.5,1654.0 69.2,1657.5 64.6,236.6 1549.6,235.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42366722582173,41.005336656907794]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41973728600087,41.00533097616212]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41974615094279,41.0017887477879]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42367609076365,41.00179442853357]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 -0.0,1913.0 -0.0,0.0 343.4,-0.0 418.7,81.0 1613.0,88.6 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42332357129382,41.00666556421136]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42329336302231,41.00367810472094]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42795547770766,41.00365087732207]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42798568597917,41.00663833681249]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p29 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4192.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3459.6"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"548.6,1048.2 57.9,1048.3 59.0,1870.0 1567.0,1870.0 1565.2,1766.5 1613.0,1766.6 1613.0,1048.1 1579.8,1048.1 1580.2,1130.9 548.6,1133.9 548.6,1048.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[59.0,1870.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4198793,41.0020644]}},{"type":"Feature","properties":{"resourceCoords":[1567.0,1870.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4160402,41.0020709]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p29 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"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":"4193.2"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1552.0,1014.3 1546.7,193.8 -0.0,213.2 -0.0,1031.7 1552.0,1014.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[104.0,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4270641,41.003867]}},{"type":"Feature","properties":{"resourceCoords":[1552.0,1014.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.423506,41.002151]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"537.1,1125.1 546.0,1660.0 -0.0,1668.6 -0.0,-0.0 265.2,0.0 284.7,1125.5 537.1,1125.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4271031845347,41.0270899744306]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4243250044964,41.029217282951656]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42100415536093,41.02671404044262]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42378233539924,41.024586731921566]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p30 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3004.4"},{"label":"split_canvas_h","value":"2240.4"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 0.0,560.1 750.1,559.6 751.1,0.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[730.1,35.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4312653,41.0029442]}},{"type":"Feature","properties":{"resourceCoords":[730.1,499.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4312645,41.0019952]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p30 [2]","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"38"},{"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":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"802.6,61.8 802.9,0.0 751.1,0.0 750.1,559.6 0.0,560.1 -0.0,1913.0 520.4,1913.0 521.2,1453.0 1174.2,1451.3 1175.5,1913.0 1584.2,1913.0 1580.6,55.9 802.6,61.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1095.0,455.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4258964,41.000672]}},{"type":"Feature","properties":{"resourceCoords":[491.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4288685,40.9994835]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"38.5,0.0 786.1,0.0 786.2,42.5 1577.8,54.0 1576.8,0.0 1613.0,0.0 1613.0,1913.0 39.0,1913.0 38.5,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42369284774358,41.0022672834528]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4158696836524,41.0022698653314]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.41586565486313,40.99521798538144]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.4236888189543,40.99521540350284]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p32 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2216.8"},{"label":"split_canvas_h","value":"3510.0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 0.0,875.0 502.1,877.2 554.2,877.5 536.8,797.6 374.1,0.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[110.0,851.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4148449,41.003493]}},{"type":"Feature","properties":{"resourceCoords":[110.0,122.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4148341,41.0048929]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"254.6,1836.3 255.1,1157.9 -0.0,1153.9 -0.0,-0.0 1613.0,0.0 1613.0,1837.8 254.6,1836.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42667454947545,41.027460381146625]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42397385446262,41.02960083695605]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42063241675689,41.02716745857786]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42333311176972,41.02502700276843]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p5","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1506.6,-0.0 1497.8,1913.0 112.7,1913.0 107.2,771.9 -0.0,771.6 -0.0,-0.0 1506.6,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[813.0,1600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4209256,41.025243]}},{"type":"Feature","properties":{"resourceCoords":[107.0,37.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4195088,41.0282483]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p6","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,321.5 135.8,322.4 136.7,124.8 1523.8,129.8 1518.5,1193.1 1613.0,1195.1 1613.0,1913.0 -0.0,1913.0 -0.0,321.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,325.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4217972,41.02456]}},{"type":"Feature","properties":{"resourceCoords":[1522.0,325.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4205779,41.0236818]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p7","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1532.0,92.0 1528.8,1913.0 -0.0,1913.0 -0.0,196.0 662.1,190.4 663.3,95.8 1532.0,92.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1532.0,1819.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4175308,41.0214497]}},{"type":"Feature","properties":{"resourceCoords":[1532.0,92.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4205779,41.0236818]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p8","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"237.7,1830.2 213.0,97.4 1454.0,80.0 1432.0,535.4 1464.2,1818.7 237.7,1830.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[744.0,1309.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4175574,41.0227931]}},{"type":"Feature","properties":{"resourceCoords":[1454.0,80.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4184584,41.0253278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p9","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-23T16:16:11Z","modified":"2026-09-23T16:16:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,889.2 1613.0,1913.0 248.4,1913.0 248.9,884.2 156.0,881.0 159.4,-0.0 1503.2,-0.0 1490.0,890.0 1613.0,889.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[156.0,374.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.416652,41.0221332]}},{"type":"Feature","properties":{"resourceCoords":[1490.0,890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4151627,41.0196929]}}]}}]}