{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07634_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Duquesne, Pennsylvania | 1907 | 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":"16"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 10, georef-snap 4, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p17__1 (tier 2, 40.36383,-79.84270 +/-100m); p17__2 (tier 1, 40.36275,-79.84419 +/-203m); p17__3 (tier 1, 40.36344,-79.84371 +/-108m); p18__1 (tier 1, 40.37090,-79.84148 +/-185m); p2 (tier 2, 40.37569,-79.84619 +/-100m); p3 (tier 2, 40.37064,-79.84419 +/-435m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,0.0 6452.0,7652.0 0.0,7652.0 0.0,-0.0 6452.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84790057534678,40.36420017081675]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84817623219237,40.365710109670026]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84584238899885,40.36596096173158]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84556673215326,40.364451022878306]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0010/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,275.1 5709.2,332.0 6203.4,4649.4 6360.3,4654.6 6431.1,7304.7 -0.0,7171.6 -0.0,275.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8481818716684,40.37301191048178]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84451579991371,40.37392654274364]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84310196139242,40.37059067462891]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84676803314711,40.36967604236705]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p11","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"18"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0011/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3879.8 302.0,3881.1 254.4,263.2 62.6,267.8 58.1,0.0 6351.6,0.0 6143.5,4528.4 6452.0,4547.5 6452.0,7652.0 -0.0,7652.0 -0.0,3879.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1164.0,2332.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8457952,40.3689969]}},{"type":"Feature","properties":{"resourceCoords":[4688.0,5328.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8432019,40.3681406]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0012/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0012/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 117.3,0.0 102.3,504.4 6452.0,718.1 6452.0,7652.0 -0.0,7652.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84568398074667,40.366674521620524]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8420172263513,40.36762976190772]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84054075500724,40.364292958390465]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84420750940262,40.36333771810327]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p13","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"24"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0013/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0013/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1820.9,516.0 2266.5,1891.3 3373.4,1914.7 3372.0,482.6 4257.3,625.1 4298.4,1140.5 6359.5,1152.9 6387.5,7320.6 2766.8,7332.2 2771.1,7030.0 0.0,7002.4 44.5,1082.5 1820.9,516.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4312.0,4696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8478423,40.3685067]}},{"type":"Feature","properties":{"resourceCoords":[4312.0,2024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8493983,40.3681327]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p14","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"17"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0014/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0014/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 5598.0,0.0 5639.9,2592.8 5113.5,2646.0 4987.0,3554.8 6452.0,3522.3 6452.0,4655.2 5054.7,5140.8 5672.6,6945.9 6452.0,6935.3 6452.0,7652.0 -0.0,7652.0 -0.0,3385.2 1356.0,1888.8 -0.0,362.6 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3332.0,2916.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8511774,40.3675682]}},{"type":"Feature","properties":{"resourceCoords":[5608.0,484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8502817,40.3689192]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0015/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0015/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 5615.6,0.0 5500.0,3471.6 5993.3,3491.3 6104.7,7038.0 4786.9,7303.9 4805.9,7652.0 3810.7,7652.0 3602.7,7086.4 1943.0,7652.0 1229.4,7652.0 135.2,4247.9 -0.0,4282.5 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.85849859582204,40.3701286733848]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8554341283209,40.37195931855276]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.85260440786789,40.36917077863976]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.85566887536903,40.3673401334718]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p16 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3587.6"},{"label":"split_canvas_w","value":"2868.4"},{"label":"split_canvas_h","value":"4064.4"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7585.0 2356.5,7464.7 2866.3,7319.9 2844.2,3866.2 1540.1,3852.5 368.0,3605.0 299.1,5841.6 0.0,5846.6 0.0,7585.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[300.0,5154.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8543284,40.3673131]}},{"type":"Feature","properties":{"resourceCoords":[300.0,3839.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8549718,40.3676204]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p16 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"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":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5934.9,7652.0 5915.9,6803.3 6202.2,6792.1 6249.8,1054.1 6110.1,1043.9 6452.0,0.0 -0.0,-0.0 0.0,3589.2 2842.4,3587.6 2868.4,7652.0 5934.9,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0016__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1968.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8586159,40.367145]}},{"type":"Feature","properties":{"resourceCoords":[6240.0,3980.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8553943,40.3678764]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0018__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p18 [2]","metadata":[{"label":"streets","value":"6"},{"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":"4796.0"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0018__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0018/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,4796.0 6452.0,4796.0 6452.0,221.9 3571.5,841.9 3575.3,918.8 2712.8,1028.4 0.0,1091.9 0.0,4796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0018__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[684.0,1016.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8427749,40.3692972]}},{"type":"Feature","properties":{"resourceCoords":[3496.0,852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8437653,40.3718002]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2992.4,0.0 5353.4,0.0 5616.0,1270.1 5938.3,1272.9 5941.2,0.0 6452.0,0.0 6452.0,5449.3 5638.0,5121.0 5450.1,6778.9 84.5,5053.4 153.1,854.0 3013.9,896.7 2992.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84975909165671,40.37474534145161]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84668438521065,40.37641409198091]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84410473950135,40.3736164237167]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8471794459474,40.37194767318739]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0005/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 868.2,7296.2 878.1,3865.0 -0.0,3865.6 -0.0,-0.0 6452.0,0.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3604.0,4044.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8491692,40.3764285]}},{"type":"Feature","properties":{"resourceCoords":[1780.0,7300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8489438,40.3747126]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0006/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4668.9 83.8,4694.0 0.0,-0.0 6193.3,0.0 6170.6,7596.6 4452.8,7063.5 4295.0,7652.0 3343.7,7652.0 3601.9,6787.2 -0.0,5630.0 -0.0,4668.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.85361238013282,40.37415964981282]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.85045885604464,40.37584159847487]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84785883189484,40.37297218778536]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.85101235598302,40.371290239123304]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p7","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"13"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0007/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"382.3,5669.2 493.6,7652.0 -0.0,7652.0 0.0,-0.0 6452.0,0.0 6452.0,2027.7 6083.9,2022.5 5968.3,7601.0 382.3,5669.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2392.0,2800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8551448,40.3728767]}},{"type":"Feature","properties":{"resourceCoords":[3596.0,3952.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8541488,40.372771]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p8","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"13"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0008/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0008/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"138.8,64.9 6268.1,154.5 6254.0,6900.6 698.6,6773.9 690.4,7133.8 252.4,6617.6 1188.3,6267.7 1050.1,5945.7 2197.5,5231.3 138.8,64.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1060.0,2416.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8541594,40.3703686]}},{"type":"Feature","properties":{"resourceCoords":[6252.0,6332.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.850473,40.3693771]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1907 | sanborn07634_004 p9","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"}],"created":"2026-09-23T01:16:14Z","modified":"2026-09-23T01:16:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0009/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3668.0,319.0 3678.2,1228.1 4567.4,926.0 4543.9,326.5 6105.5,318.3 6164.3,7404.1 165.9,7438.9 158.0,297.1 3668.0,319.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341907:07634_1907-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3688.0,3200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8490094,40.3712823]}},{"type":"Feature","properties":{"resourceCoords":[160.0,3200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8510571,40.3707928]}}]}}]}