{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00440_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Calexico, California | 1920 | 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":"22"},{"label":"placed","value":"18"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 11, georef-snap 7"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 32.66651,-115.49083 +/-100m); p4__1 (tier 1, 32.68032,-115.50786 +/-154m); p4__3 (tier 1, 32.68021,-115.50469 +/-100m); p6__1 (tier 1, 32.67445,-115.49602 +/-100m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0010/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7577.4 504.2,7594.7 589.8,-0.0 6452.0,109.4 6452.0,7577.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49066650712552,32.67319261723774]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49067384980361,32.67015132623402]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.4949287304321,32.670158708442244]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.494921387754,32.67319999944596]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p11","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0011/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6292.0,-0.0 6310.9,7652.0 -0.0,7652.0 -0.0,0.0 6292.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1780.0,5504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4895411,32.6718809]}},{"type":"Feature","properties":{"resourceCoords":[6288.0,5504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4895484,32.6698095]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0012/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0012/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6317.6,4804.4 6350.6,7172.3 5838.2,7164.0 5830.6,7652.0 -0.0,7652.0 51.7,0.0 4018.9,0.0 4018.4,198.2 6356.4,216.7 6321.6,4511.2 6452.0,4512.5 6452.0,4806.8 6317.6,4804.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.50209227101666,32.66991415338885]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49862917093365,32.66992864132929]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.4986089025545,32.6664467606847]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.5020720026375,32.66643227274426]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0013/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0013/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,261.8 6452.0,247.0 6452.0,7237.2 -0.0,7267.5 -0.0,261.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2168.0,5044.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4974847,32.6698308]}},{"type":"Feature","properties":{"resourceCoords":[2168.0,272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4948914,32.6698208]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p14","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0014/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0014/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"942.4,7483.5 972.4,184.6 6452.0,201.8 6452.0,7491.6 5905.9,7496.7 5903.9,7652.0 5739.0,7652.0 5740.1,7495.4 942.4,7483.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3824.0,2580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4920942,32.6687834]}},{"type":"Feature","properties":{"resourceCoords":[3824.0,7484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4948842,32.6687786]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0015/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0015/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"159.3,7216.3 159.6,7084.0 -0.0,7086.5 -0.0,248.5 6452.0,-0.0 6452.0,7652.0 2489.5,7652.0 2489.8,7147.5 159.3,7216.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.494753563572,32.66778031914955]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49479102812421,32.664798365095486]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49896264529848,32.66483603358904]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49892518074627,32.667817987643105]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p16","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0016/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0016/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2290.2,7341.0 2319.2,8.8 6452.0,-0.0 6452.0,7242.0 6315.1,7245.0 6313.8,7319.1 2290.2,7341.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6332.0,2396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4920748,32.6656097]}},{"type":"Feature","properties":{"resourceCoords":[6332.0,4920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4935024,32.6656025]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0017/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0017/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.0,7652.0 123.2,165.8 6452.0,167.0 6452.0,7652.0 132.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49080797911455,32.66988136206199]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.48715488640084,32.669881330718326]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.48715493025006,32.66620842359633]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49080802296376,32.66620845494]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0018/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0018/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"660.4,87.2 6452.0,0.0 6452.0,7652.0 614.8,7652.0 660.4,87.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.4875237521528,32.66984052107436]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.4839230749488,32.669858914094384]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.48389734343989,32.66623870892785]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.48749802064388,32.66622031590783]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6236.2,7652.0 -0.0,7652.0 -0.0,0.0 6452.0,139.3 6452.0,2268.3 5293.9,2259.4 5266.5,4320.0 6265.2,4335.5 6236.2,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49625094761895,32.67914062494536]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49620884866683,32.67603383602755]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.50055565005492,32.67599151322273]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.50059774900704,32.679098302140545]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p3","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6007.5,2735.2 6452.0,3608.8 6452.0,7652.0 -0.0,7652.0 -0.0,-0.0 5450.4,0.0 5441.9,1065.1 6007.5,2735.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2636.0,2676.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.5052136,32.6740172]}},{"type":"Feature","properties":{"resourceCoords":[2636.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.5052229,32.6750492]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p4 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"1616.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4836.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0004__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2618.8,6062.8 2619.1,6105.8 2762.0,6494.0 2763.1,7045.9 6232.7,6999.8 6227.1,700.6 6452.0,700.7 6452.0,0.0 1616.0,0.0 1671.2,2231.6 2226.8,3707.6 2194.8,4952.8 2453.7,5656.2 2618.8,6062.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6236.2,2952.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.5011651,32.6750514]}},{"type":"Feature","properties":{"resourceCoords":[4034.0,672.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.5023794,32.6761097]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p5 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4920.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"2732.0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"186.6,5384.2 184.0,7452.0 6304.0,7452.0 6310.7,5387.3 4358.7,5386.3 4315.8,5386.3 186.6,5384.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[184.0,7452.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4999357,32.6729643]}},{"type":"Feature","properties":{"resourceCoords":[6304.0,7452.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4999349,32.669833]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p5 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"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":"4921.2"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6303.2,4516.7 6317.0,410.2 168.8,404.0 179.1,3513.5 -0.0,3515.7 -0.0,4319.7 178.7,4319.6 178.6,4525.5 6303.2,4516.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2224.0,2484.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4999343,32.6750519]}},{"type":"Feature","properties":{"resourceCoords":[6316.0,2484.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4999357,32.6729643]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p6 [2]","metadata":[{"label":"streets","value":"10"},{"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":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0006__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"40.2,5708.8 811.2,5708.8 844.4,7652.0 6311.0,7652.0 6452.0,0.0 4094.9,0.0 4073.2,1224.4 2065.2,1221.2 2075.5,121.1 132.0,92.0 40.2,5708.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2040.0,3784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4974922,32.6747219]}},{"type":"Feature","properties":{"resourceCoords":[132.0,92.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4986706,32.6765808]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0007/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6251.0,7522.9 -0.0,7493.3 -0.0,0.0 6452.0,-0.0 6251.0,7522.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.4906552918971,32.67597112446212]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.4906397663214,32.67288139415961]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49496254682795,32.67286578547497]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.49497807240365,32.67595551577748]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p8","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0008/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0008/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"500.1,0.0 4115.8,0.0 4112.0,436.0 6349.4,480.1 6266.1,7045.3 2396.3,7014.8 2386.6,7652.0 -0.0,7652.0 -0.0,2955.1 484.5,2957.7 500.1,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4112.0,436.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.501167,32.6729714]}},{"type":"Feature","properties":{"resourceCoords":[6264.0,7240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4999349,32.669833]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Calexico, California | 1920 | sanborn00440_003 p9","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-23T04:43:05Z","modified":"2026-09-23T04:43:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0009/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6406.1,440.9 6452.0,7383.0 2325.9,7393.0 2234.4,443.2 6406.1,440.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004401920:00440_1920-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4124.0,5212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4974938,32.6719208]}},{"type":"Feature","properties":{"resourceCoords":[4124.0,2996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.4962835,32.6719208]}}]}}]}