{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00174_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Somerton, Arizona | 1926 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"6"},{"label":"placed","value":"3"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 2, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 32.59629,-114.70909 +/-259m); p1__2 (tier 1, 32.59655,-114.70867 +/-100m); p2__2 (tier 4, 32.59804,-114.71158 +/-275m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Somerton, Arizona | 1926 | sanborn00174_002 p2 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6820.0"},{"label":"split_canvas_h","value":"8016.0"}],"created":"2026-09-21T21:28:55Z","modified":"2026-09-21T21:28:55Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0002__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0002/info.json","type":"ImageService2","height":8016,"width":6820},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2326.4,0.0 2317.6,2153.6 0.0,2131.2 0.0,2131.6 -0.0,8016.0 6591.0,8016.0 6591.5,7827.0 6820.0,7826.3 6820.0,0.0 2326.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6568.0,5616.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-114.7110354,32.5996083]}},{"type":"Feature","properties":{"resourceCoords":[6568.0,1312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-114.7110538,32.6015253]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Somerton, Arizona | 1926 | sanborn00174_002 p3","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"}],"created":"2026-09-21T21:28:55Z","modified":"2026-09-21T21:28:55Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0003/info.json","type":"ImageService2","height":8048,"width":6836},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6550.7,8007.2 -0.0,8048.0 45.4,414.5 6527.9,375.9 6550.7,8007.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2520.0,2376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-114.7131666,32.5976298]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,2376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-114.7109977,32.5976337]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Somerton, Arizona | 1926 | sanborn00174_002 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T21:28:55Z","modified":"2026-09-21T21:28:55Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0004/info.json","type":"ImageService2","height":8016,"width":6800},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"299.1,212.3 525.2,211.6 525.2,0.0 6800.0,0.0 6800.0,8016.0 276.3,8016.0 299.1,212.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334sm:g4334sm_g001741926:00174_1926-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-114.71117434633646,32.59871880106889]}},{"type":"Feature","properties":{"resourceCoords":[6800.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-114.70753862094197,32.59874375417107]}},{"type":"Feature","properties":{"resourceCoords":[6800.0,8016.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-114.70750395048813,32.59510750459663]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8016.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-114.71113967588262,32.59508255149446]}}]}}]}