{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07707_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Harrisburg, Pennsylvania | 1956 | mapsnap generated fit (2026-10-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-24"},{"label":"run","value":"corpus-v2.2"},{"label":"pages","value":"90"},{"label":"placed","value":"78"},{"label":"unplaced","value":"12"},{"label":"fit sources","value":"georef 40, georef-snap 38"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p11__1 (tier 1, 40.25725,-76.89296 +/-184m); p11__2 (tier 1, 40.26447,-76.88128 +/-455m); p31 (tier 1, 40.27158,-76.87811 +/-133m); p52 (tier 1, 40.25710,-76.87212 +/-268m); p71 (tier 2, 40.25226,-76.87112 +/-152m); p72 (tier 1, 40.24989,-76.86736 +/-264m); p73 (tier 3, 40.24576,-76.86530 +/-476m); p74 (tier 1, 40.24339,-76.85914 +/-131m); p75 (tier 1, 40.24229,-76.85912 +/-264m); p76__2 (tier 1, 40.23904,-76.85362 +/-264m); p77__1 (tier 1, 40.24956,-76.86458 +/-229m); p77__2 (tier 1, 40.27545,-76.87395 +/-207m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0001","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"266.0,1151.0 132.9,917.4 142.3,346.7 213.0,197.4 184.3,144.8 415.3,120.1 482.5,60.3 563.2,102.0 563.0,94.2 819.4,82.6 842.6,551.4 854.8,890.8 903.1,947.0 890.6,1162.3 701.0,1137.4 595.5,1139.4 597.0,1177.8 431.1,1182.0 264.4,1158.5 266.0,1151.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[444.0,1185.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87575702678676,40.25414870820017]}},{"type":"Feature","properties":{"resourceCoords":[840.0,557.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87665377508903,40.25606346585513]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0010","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"338.9,938.8 256.9,700.5 224.4,615.7 160.1,419.6 85.5,207.9 212.7,207.6 532.5,207.5 668.4,208.8 866.5,207.3 889.8,182.2 909.6,182.9 909.9,182.9 944.1,183.1 1083.7,185.5 1087.0,189.0 1087.0,1329.4 867.1,854.0 865.5,934.8 673.9,934.2 599.9,936.9 367.7,1026.6 338.9,938.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[545.0,422.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8863426166971,40.26409550457103]}},{"type":"Feature","properties":{"resourceCoords":[508.0,944.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88555244908609,40.26273956802247]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p12","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0012","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.5,1086.0 393.7,1286.9 400.6,1349.0 420.9,1302.4 450.3,1319.2 1007.5,758.4 926.1,707.7 1087.0,204.3 1087.0,1.0 532.2,1.0 533.1,30.0 500.6,35.4 508.0,292.0 516.8,550.6 267.9,554.6 43.0,556.0 32.4,591.2 34.8,809.8 39.2,929.1 38.8,1051.0 41.5,1086.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[508.0,292.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8794721,40.2634635]}},{"type":"Feature","properties":{"resourceCoords":[43.0,556.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8796994,40.2619655]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0013","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"197.1,1108.3 103.8,1058.3 58.7,979.6 68.2,340.9 127.9,148.2 396.0,231.8 396.0,174.8 970.7,167.1 972.5,357.7 971.8,561.5 1087.0,561.8 1087.0,604.1 1087.0,609.1 972.4,608.9 974.7,823.1 901.8,824.0 906.3,1109.2 777.8,1109.2 398.0,1108.0 397.5,1151.0 228.0,1183.6 197.1,1108.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[398.0,574.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8903833,40.2648391]}},{"type":"Feature","properties":{"resourceCoords":[398.0,1108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.889456,40.2635189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0014","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"652.8,168.8 840.9,167.8 839.5,540.5 847.5,661.4 841.5,1074.1 835.0,1122.0 633.7,1120.8 495.7,1117.7 170.9,1113.4 169.4,826.8 242.6,826.7 242.5,611.4 357.8,612.8 358.2,565.3 242.4,563.8 245.4,359.0 245.5,167.4 652.8,168.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[454.0,691.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88764371339613,40.26560346303004]}},{"type":"Feature","properties":{"resourceCoords":[252.0,169.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88921102113801,40.26660888982183]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p15","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0015","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"713.0,188.6 916.2,187.0 968.6,186.6 1025.5,379.7 1032.1,457.7 1031.1,579.1 1021.5,662.4 983.6,661.7 972.9,1154.1 1008.5,1155.8 1087.0,1220.5 1087.0,1349.0 515.3,1349.0 324.2,1140.2 179.6,1134.8 143.8,1134.0 123.3,1132.8 98.7,1158.3 105.7,1109.6 114.4,688.5 107.2,565.1 111.0,185.0 713.0,188.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[111.0,857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8861508,40.2657978]}},{"type":"Feature","properties":{"resourceCoords":[111.0,185.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.887325,40.2674034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0016","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"795.8,251.6 789.9,12.5 843.6,11.1 944.6,8.4 1087.0,192.2 1087.0,749.6 926.8,1349.0 178.1,1349.0 176.8,1308.0 95.5,1244.9 60.0,1244.3 56.1,752.2 94.0,751.8 101.2,668.4 98.6,547.0 89.7,469.4 27.2,278.2 795.8,251.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[814.0,272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88214190238709,40.26955220367448]}},{"type":"Feature","properties":{"resourceCoords":[814.0,707.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88142153312634,40.26849534457976]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p17","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0017","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"60.0,920.8 67.8,395.5 186.8,339.7 274.5,180.3 307.9,169.7 383.5,169.0 418.0,178.6 417.4,167.4 864.4,175.6 864.4,198.5 864.3,835.0 867.5,1070.2 290.1,1071.5 289.4,1128.8 21.0,1041.8 60.0,920.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[660.0,529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8908546,40.2676482]}},{"type":"Feature","properties":{"resourceCoords":[660.0,835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8903147,40.2668999]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p18","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0018","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"229.5,180.9 265.8,192.3 392.0,188.4 407.5,179.2 456.5,178.8 477.2,188.6 614.1,186.7 640.1,176.8 676.5,188.1 765.5,186.4 832.8,175.2 835.1,238.6 835.1,408.4 841.6,1083.4 652.0,1086.0 241.6,1088.4 236.0,851.4 229.8,209.9 229.5,180.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[652.0,1086.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8879266,40.2671483]}},{"type":"Feature","properties":{"resourceCoords":[233.0,543.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8901996,40.2679232]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p19","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0019","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"686.1,1081.0 96.0,1081.0 96.0,411.2 97.6,242.8 96.0,179.8 97.6,118.1 394.1,112.2 690.8,108.8 960.1,108.7 941.6,172.4 1072.8,191.3 944.6,865.1 944.4,845.1 919.3,943.7 899.5,1021.8 900.1,1078.0 885.2,1078.2 686.1,1081.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[96.0,539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8882809,40.2687289]}},{"type":"Feature","properties":{"resourceCoords":[96.0,1081.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.887325,40.2674034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p2","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0002","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.8,900.0 92.2,842.6 97.0,509.7 97.4,49.4 400.4,50.7 402.6,143.1 846.2,45.2 847.2,4.3 920.3,194.2 980.5,209.3 1087.0,537.9 1087.0,1331.0 1047.0,1339.0 1046.0,1349.0 1043.0,1340.0 1027.0,1340.0 1026.0,1349.0 979.0,1349.0 978.0,1340.0 959.0,1340.0 958.0,1349.0 753.0,1349.0 752.0,1340.0 732.0,1340.0 731.0,1349.0 656.4,1349.0 376.7,1218.3 378.1,1221.4 323.6,1148.7 114.0,1110.3 136.8,900.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[350.0,506.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8761408,40.2566616]}},{"type":"Feature","properties":{"resourceCoords":[350.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8775011,40.2573945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p20","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.32"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0020","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"21.1,963.1 1.0,1038.8 1.0,1100.0 37.3,1100.0 808.0,1100.0 810.4,860.3 864.2,860.8 1019.2,862.0 1026.5,862.1 908.2,178.8 905.9,213.9 856.3,170.0 855.9,175.5 196.2,148.1 47.9,883.1 47.8,862.5 21.1,963.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[808.0,1100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8822335,40.2695788]}},{"type":"Feature","properties":{"resourceCoords":[11.0,1100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8847186,40.2685077]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p21","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0021","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"921.8,329.3 927.0,537.0 927.0,1169.0 927.0,1174.8 482.1,1167.2 482.7,1178.4 448.3,1168.9 373.1,1169.7 339.9,1180.3 340.7,1178.8 76.7,990.0 62.0,587.0 98.9,409.7 237.0,287.9 329.3,69.8 421.1,32.4 761.2,32.4 921.5,83.7 921.8,329.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[927.0,537.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8919506,40.2703557]}},{"type":"Feature","properties":{"resourceCoords":[927.0,1169.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8908332,40.2688018]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0022","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"190.0,84.0 677.5,46.5 789.7,98.1 789.8,945.2 791.4,1118.2 789.8,1180.4 722.4,1191.0 633.4,1191.8 597.1,1180.2 571.0,1189.8 434.1,1190.5 413.5,1180.4 364.4,1180.4 348.9,1189.5 222.6,1192.2 186.5,1180.4 187.2,540.5 182.2,330.1 182.1,81.4 190.0,84.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[598.0,738.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.89029850868756,40.270424763598925]}},{"type":"Feature","properties":{"resourceCoords":[185.0,109.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.89271257058476,40.27139972848096]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p23","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0023","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"217.3,906.9 224.8,61.6 236.8,67.2 481.9,37.8 701.7,83.2 710.9,78.2 708.7,324.9 820.7,325.9 814.0,1075.5 515.6,1076.2 217.3,1079.5 217.3,906.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[358.0,697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8892538,40.2708771]}},{"type":"Feature","properties":{"resourceCoords":[358.0,1079.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8885729,40.2699528]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p24","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0024","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"246.9,60.4 784.6,44.6 884.2,104.8 848.8,348.0 831.7,551.9 781.0,716.0 750.3,780.8 673.5,1183.7 541.0,1164.6 559.7,1100.3 287.9,1100.2 288.1,347.7 175.7,347.7 175.8,100.1 246.9,60.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[288.0,716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8878046,40.2715123]}},{"type":"Feature","properties":{"resourceCoords":[781.0,716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8862396,40.2721699]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p25","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.33"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0025","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"867.9,1054.2 843.9,648.4 844.0,553.0 849.4,443.7 837.1,326.3 859.6,269.5 697.6,1.0 696.8,1.0 674.5,65.9 382.2,67.3 287.9,149.8 282.5,147.3 274.8,403.9 281.4,617.5 248.5,793.8 224.4,864.7 196.7,1241.3 875.6,1184.1 867.9,1054.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[433.0,109.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8865474,40.274033]}},{"type":"Feature","properties":{"resourceCoords":[844.0,553.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8846437,40.2733573]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.42"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0026","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"216.4,1149.3 219.9,1149.1 143.2,819.5 143.1,836.7 117.7,816.7 118.2,757.9 120.0,565.6 123.1,520.6 129.2,469.2 127.2,413.4 139.6,387.4 71.6,255.0 90.7,209.7 95.2,74.9 195.2,40.9 352.6,59.2 458.0,35.8 699.3,30.9 964.5,59.3 991.6,80.7 958.8,163.9 1002.0,354.3 1071.2,388.3 1087.0,375.8 1087.0,413.0 1067.7,512.5 1053.3,511.8 779.6,1119.6 872.6,1114.4 912.7,1112.2 876.5,1152.7 862.0,1277.8 339.3,1349.0 299.6,1349.0 311.4,1300.0 190.2,1150.6 216.4,1149.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[142.0,438.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88478652420397,40.273819052385875]}},{"type":"Feature","properties":{"resourceCoords":[1079.0,362.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8788619030591,40.27651528976479]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p27 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"678.6,1183.9 929.9,1155.8 1087.0,1138.1 1087.0,1122.0 970.4,1120.0 999.2,538.0 868.0,365.9 888.3,306.3 803.9,270.1 797.0,188.2 818.1,73.9 570.3,70.1 570.7,67.7 580.1,1.0 551.0,1.0 65.7,1246.1 251.6,1226.1 362.3,1214.2 678.6,1183.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[644.0,504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8775077,40.2745088]}},{"type":"Feature","properties":{"resourceCoords":[392.0,1211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8773349,40.2724184]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p27 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.58"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1295.2"},{"label":"split_canvas_h","value":"1819.2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"258.4,416.7 279.3,272.8 254.9,242.9 292.1,226.3 318.9,36.2 85.4,28.7 35.4,76.2 33.5,78.0 40.2,151.7 12.9,420.0 12.6,422.4 258.4,416.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0027__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[42.0,407.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87829944564334,40.27560833182869]}},{"type":"Feature","properties":{"resourceCoords":[42.0,66.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8787513283736,40.276505628990066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0028","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"970.2,224.8 1001.9,768.8 1017.5,1076.0 1087.0,1062.0 1087.0,1096.6 864.4,1349.0 831.0,1349.0 830.0,1340.0 811.0,1340.0 810.0,1349.0 628.4,1349.0 553.3,1266.3 585.7,1171.6 543.5,324.4 590.0,34.5 820.5,21.9 958.7,58.6 962.9,50.4 970.2,224.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[577.0,479.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87471609956205,40.27567524264415]}},{"type":"Feature","properties":{"resourceCoords":[577.0,1172.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87399589205761,40.27386037036807]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p29","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0029","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"206.2,150.4 341.8,116.2 833.5,151.7 870.0,107.8 889.8,592.5 892.7,592.5 898.0,871.0 897.9,1133.8 607.2,1136.6 295.7,1183.9 257.3,1223.5 258.9,1189.5 190.0,1200.0 188.8,897.4 182.8,361.4 183.7,189.6 206.2,150.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[898.0,871.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8705522,40.275982]}},{"type":"Feature","properties":{"resourceCoords":[189.0,1049.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8727711,40.274856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0003","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"441.5,178.6 698.8,181.5 738.3,181.8 782.9,182.0 890.5,182.6 952.9,182.9 948.0,580.8 1011.5,734.5 964.1,734.8 955.5,935.3 1022.9,931.6 1067.8,1139.5 748.9,1208.8 746.9,1115.4 440.5,1113.1 186.0,1111.0 185.8,1118.8 108.0,1073.2 160.7,1031.2 107.5,674.6 186.0,208.0 186.9,179.0 441.5,178.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[186.0,179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8813356,40.2577266]}},{"type":"Feature","properties":{"resourceCoords":[186.0,1111.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8785742,40.2562487]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p30","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0030","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.8,61.6 474.4,35.9 882.9,129.5 1021.3,107.7 1050.3,452.1 1021.0,785.4 1052.3,870.0 1035.0,1349.0 1032.0,1349.0 1027.9,1349.0 985.5,1094.8 963.4,1094.8 963.3,1130.6 108.5,1127.9 112.0,863.0 110.3,582.1 107.4,582.1 93.9,93.0 120.8,61.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[112.0,863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8705522,40.275982]}},{"type":"Feature","properties":{"resourceCoords":[964.0,589.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8680065,40.2775056]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p32","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0032","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1071.4,1236.8 1084.0,261.9 1085.5,256.2 1084.5,228.1 1046.0,219.2 660.0,115.2 518.5,82.7 405.4,56.8 326.7,35.2 196.9,64.4 1.0,31.9 1.0,1161.9 633.4,1349.0 730.0,1349.0 731.0,1340.0 747.0,1340.0 748.0,1349.0 873.0,1349.0 874.0,1340.0 903.0,1340.0 904.0,1349.0 1087.0,1349.0 1087.0,1241.0 1071.4,1236.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0032/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.87688582745504,40.2706944532471]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.87496061837567,40.26804590801572]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.87927188176405,40.266224989611]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.88119709084343,40.26887353484238]}},{"type":"Feature","properties":{"resourceCoords":[1046.0,219.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8757354,40.2678523]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0033","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.8,168.0 1.0,255.4 1.0,985.9 49.9,1106.1 41.5,1186.9 37.8,1247.1 590.1,1265.5 592.5,1238.2 918.4,1283.1 1087.0,1170.8 1087.0,91.9 921.8,19.8 809.0,25.0 810.0,41.1 654.6,68.6 406.2,112.6 93.1,162.8 62.8,168.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[84.0,949.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87649553476639,40.27029755287197]}},{"type":"Feature","properties":{"resourceCoords":[83.0,179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87744508116046,40.272325282226895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p34","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0034","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"418.0,92.4 474.7,127.0 678.5,96.6 678.2,101.8 830.9,85.5 830.7,89.0 1005.2,91.3 990.5,196.8 964.9,265.3 983.4,274.2 927.1,333.4 914.8,399.9 1048.5,534.4 1053.7,604.9 1014.2,772.4 884.0,908.8 863.1,1038.2 610.0,1174.0 568.4,1151.5 372.7,1239.9 282.1,1208.8 257.1,1088.4 358.1,444.6 348.5,279.1 355.8,86.7 418.0,92.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0034/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.86083329044573,40.24404182260363]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.85818912071353,40.24619829946471]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.85470818024291,40.24367628668975]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.8573523499751,40.24151980982867]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0035","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"283.0,95.9 1.0,389.5 1.0,1311.4 542.0,1283.6 609.9,1293.1 608.5,1242.9 907.8,1238.3 890.9,42.4 597.3,46.7 283.0,95.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[902.0,197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8700102511763,40.27490128482534]}},{"type":"Feature","properties":{"resourceCoords":[902.0,1228.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86878234050435,40.272220816102816]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0036","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.0,34.4 104.1,1237.4 535.0,1238.0 750.1,1239.3 1006.4,1238.7 1040.6,256.0 1033.5,256.0 990.6,1.0 968.2,1.0 968.2,36.1 107.0,34.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[537.0,634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86804050022425,40.274159431038946]}},{"type":"Feature","properties":{"resourceCoords":[962.0,490.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86678776690036,40.27493155999827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p37","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0037","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.3,709.1 123.8,669.4 194.3,270.5 214.4,124.7 222.1,69.0 781.5,130.4 786.0,102.8 1087.0,167.9 1087.0,177.9 1087.0,188.4 1001.5,236.4 996.3,547.3 951.1,602.4 1002.2,598.2 978.6,645.5 897.6,651.3 899.5,682.1 962.6,677.5 955.9,969.6 942.2,1139.3 933.6,1246.2 751.5,1250.3 569.6,1250.6 462.1,1240.1 174.6,1247.2 172.7,1257.7 24.4,1261.5 82.0,932.6 117.1,717.5 118.3,709.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[765.0,1231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87280615883815,40.26715703489076]}},{"type":"Feature","properties":{"resourceCoords":[123.0,683.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.875718382527,40.26781735939584]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p38","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0038","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"216.8,120.6 215.5,140.9 128.1,183.1 104.0,490.0 55.9,541.7 106.7,540.7 80.5,585.9 1.0,586.8 1.0,617.3 62.6,616.6 38.1,904.9 14.3,1071.8 1.0,1169.7 1.0,1177.0 181.9,1182.4 380.2,1188.3 514.0,1180.5 684.1,1175.1 992.1,1144.0 979.0,1026.5 948.2,591.9 991.7,591.1 992.1,421.3 988.4,295.9 1087.0,295.8 1087.0,289.2 1087.0,285.5 702.1,21.6 703.3,4.5 695.3,1.0 432.8,1.0 427.6,38.5 242.6,127.9 216.8,120.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[218.0,918.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87195789341226,40.26822371226447]}},{"type":"Feature","properties":{"resourceCoords":[1003.0,307.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87045079202093,40.27073178296964]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p39","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0039","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"268.1,311.5 263.2,437.5 251.1,607.6 207.5,605.4 208.6,1043.0 213.7,1161.7 432.4,1157.0 750.1,1158.0 779.7,1011.7 791.3,967.2 818.2,818.0 865.5,586.7 959.9,114.7 667.1,56.5 657.9,105.7 593.6,82.2 91.2,1.0 2.2,1.0 1.0,9.9 1.0,17.9 367.6,307.8 366.9,318.2 268.1,311.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[684.0,803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86830514087828,40.27018002820505]}},{"type":"Feature","properties":{"resourceCoords":[433.0,619.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86942743136129,40.27025276284491]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p4","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.38"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0004","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.7,103.9 153.9,108.1 301.8,118.7 321.0,120.1 558.2,140.9 774.0,157.0 772.8,190.7 1087.0,419.7 1087.0,497.1 1039.1,535.6 945.6,662.5 1087.0,766.6 1087.0,799.7 964.5,708.9 398.2,1349.0 391.0,1349.0 389.5,1349.0 347.4,1159.3 291.8,1139.7 239.7,953.6 235.1,992.1 111.1,1007.4 87.0,809.1 23.7,806.8 49.0,620.0 93.3,623.8 47.1,474.7 85.9,103.0 94.7,103.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[49.0,620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8780721,40.2586048]}},{"type":"Feature","properties":{"resourceCoords":[774.0,157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8782321,40.2611317]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p40","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0040","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.2,1005.8 134.2,960.2 132.7,809.5 135.8,575.0 140.1,96.8 564.5,100.2 776.5,102.9 1028.9,104.0 1020.6,304.6 1040.0,996.7 979.0,990.4 979.8,1030.3 835.0,1002.0 749.4,1027.1 553.9,1072.9 129.6,1154.0 131.2,1005.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[777.0,357.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86624471847547,40.272144993796665]}},{"type":"Feature","properties":{"resourceCoords":[116.0,1149.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86748427252348,40.2694380966864]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p41","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0041","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"412.6,1270.5 596.9,1250.4 1006.7,1203.1 1001.0,992.9 992.7,552.0 994.5,218.2 993.1,1.0 955.5,1.0 1.0,237.6 1.0,817.3 193.7,1299.7 412.6,1270.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[626.0,1225.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87587838093461,40.26421515896154]}},{"type":"Feature","properties":{"resourceCoords":[1000.0,-9.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87567143294419,40.26775355335103]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p42","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0042","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,1012.1 1.0,1183.0 186.2,1183.0 207.0,1211.3 936.5,1213.5 936.9,1183.2 940.1,824.3 939.8,609.4 939.6,491.1 939.3,307.4 953.0,144.9 544.9,123.9 361.5,113.2 240.3,109.2 34.3,886.4 1.0,886.6 1.0,929.7 17.1,951.5 1.0,1012.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[543.0,125.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87596192552053,40.26412289905129]}},{"type":"Feature","properties":{"resourceCoords":[945.0,125.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87462578035537,40.26457340038952]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p43","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0043","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.1,1124.0 137.8,941.2 144.3,779.0 164.1,572.4 209.1,139.7 355.0,129.3 356.4,118.8 639.5,98.9 745.9,104.5 925.1,96.0 911.0,574.1 877.0,572.9 872.2,783.8 901.4,784.0 899.3,1250.3 490.5,1239.8 468.9,1220.6 469.4,1239.2 151.0,1231.0 146.1,1124.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[740.0,267.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87322464214488,40.26646269478718]}},{"type":"Feature","properties":{"resourceCoords":[919.0,1213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87136114484228,40.264190453043774]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p44","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0044","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"649.2,1228.0 377.5,1230.2 243.5,1233.0 106.3,1232.0 106.1,1268.5 98.4,1268.4 91.2,800.3 61.9,800.7 62.6,588.9 96.7,589.4 101.4,109.2 281.1,93.4 463.1,75.7 660.5,56.4 792.3,31.8 960.3,4.8 950.2,433.6 953.4,794.0 951.4,972.0 979.5,972.2 964.6,1169.8 824.7,1089.0 786.1,1089.3 787.0,1208.9 649.2,1225.9 649.2,1228.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[650.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8698487,40.2653315]}},{"type":"Feature","properties":{"resourceCoords":[954.0,240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8697501,40.2675693]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p45","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0045","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"450.8,154.2 663.2,107.3 973.4,46.5 973.6,199.7 971.5,401.5 972.0,687.4 970.6,1019.1 971.0,1198.2 753.4,1195.1 141.7,1190.3 143.4,1012.5 139.9,652.6 149.5,224.4 450.8,154.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[141.0,1018.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86905881934416,40.266110393879565]}},{"type":"Feature","properties":{"resourceCoords":[143.0,649.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86951406962525,40.2670742806485]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p46","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"23"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0046","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"524.3,150.3 720.1,102.5 805.9,76.5 951.5,103.6 950.3,63.5 1011.6,69.3 1025.1,431.7 976.0,424.2 960.9,465.4 964.1,1166.9 919.9,1208.7 522.5,1215.5 97.3,1211.2 98.3,878.5 97.5,591.7 99.4,389.2 99.0,235.6 524.3,150.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[523.0,902.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8651571,40.2681083]}},{"type":"Feature","properties":{"resourceCoords":[311.0,193.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.866762,40.2697505]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0047","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"24.5,638.3 26.3,275.6 25.1,58.4 25.0,47.6 347.6,68.8 347.7,49.9 368.9,70.2 790.7,97.9 793.1,61.2 931.5,70.5 1066.8,75.6 1033.0,546.1 1087.0,582.2 1087.0,603.2 1087.0,625.5 1057.9,637.3 885.6,634.0 888.4,922.5 889.9,1200.8 715.6,1201.4 540.7,1204.1 23.5,1205.9 23.5,1196.5 24.3,677.0 24.5,638.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[920.0,81.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87095039510038,40.26426553739561]}},{"type":"Feature","properties":{"resourceCoords":[45.0,1201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87222119959888,40.26048797913267]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p48","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"30"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0048","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"179.4,136.9 169.9,601.3 224.8,634.0 227.1,676.6 199.1,689.6 29.4,695.1 46.8,978.7 62.4,1252.2 284.5,1239.1 429.8,1236.0 801.9,1243.7 812.9,981.8 1036.2,595.0 755.7,431.9 911.7,168.5 627.1,1.0 587.1,1.0 587.0,119.0 449.8,134.8 449.8,136.9 179.4,136.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[442.0,584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8690008,40.2635326]}},{"type":"Feature","properties":{"resourceCoords":[309.0,137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8700312,40.2645676]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p49","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0049","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"95.9,226.6 111.1,27.1 701.0,32.5 921.0,36.0 919.0,283.2 902.9,283.1 979.9,916.5 914.5,878.0 838.5,1011.7 725.7,1212.6 638.5,1161.5 236.0,1185.9 152.6,1139.5 376.1,745.4 90.2,582.0 246.4,313.6 95.9,226.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[912.0,291.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86571048304133,40.26576784126879]}},{"type":"Feature","properties":{"resourceCoords":[249.0,321.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86791298288598,40.26506131822414]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"71.1,166.0 565.0,170.5 1062.0,168.5 1055.0,648.4 1047.5,749.4 1003.2,944.6 999.6,1146.1 1013.0,1146.3 1009.1,1339.9 1007.1,1340.0 996.6,1288.9 974.1,1145.7 550.8,1152.5 46.7,1141.2 49.3,1065.6 53.9,929.6 101.2,792.2 66.9,428.6 71.1,166.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[81.0,1158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88279780722021,40.25856186906947]}},{"type":"Feature","properties":{"resourceCoords":[574.0,161.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88380037199151,40.25994315904162]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p50","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0050","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"138.9,27.4 560.1,27.9 953.7,17.8 950.5,20.9 1057.4,94.8 1021.3,455.9 1058.5,812.4 999.7,1314.3 991.3,1314.4 989.9,1232.6 567.2,1221.8 568.0,1275.0 434.7,1199.7 363.1,1330.5 70.9,1165.3 144.0,1033.0 208.8,1070.2 126.0,448.4 141.9,448.3 141.0,205.3 138.9,27.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[144.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8649722,40.264257]}},{"type":"Feature","properties":{"resourceCoords":[568.0,1275.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8632124,40.2640165]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p51","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0051","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1054.1,63.1 1054.0,71.2 1044.6,594.9 1039.5,899.1 1038.7,951.6 928.0,1349.0 421.1,1349.0 231.4,1205.2 150.8,1067.2 46.6,973.9 142.0,44.4 1054.1,63.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0051/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.87654468261249,40.260759803731155]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.87303946471947,40.26199787034765]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.87104052547797,40.25865538751166]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.87454574337099,40.257417320895165]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p53","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0053","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.3,395.3 135.1,447.3 31.1,844.2 1.0,844.8 1.0,1197.8 125.5,1289.3 132.5,1170.4 625.3,1171.2 817.8,1173.5 974.5,1172.8 997.6,1172.7 995.5,1050.0 1002.0,100.0 827.8,100.2 653.0,102.4 136.1,103.0 135.3,395.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[649.0,921.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8694108,40.2589631]}},{"type":"Feature","properties":{"resourceCoords":[1002.0,100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8694374,40.2614167]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p54","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0054","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"359.9,111.3 506.1,105.8 880.8,107.4 881.9,229.9 879.8,386.4 881.6,668.1 881.9,923.2 876.7,1168.3 854.1,1168.0 685.5,1170.8 502.0,1167.0 206.9,1189.9 196.2,1068.6 136.4,128.2 359.9,111.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[692.0,385.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8672262,40.2612662]}},{"type":"Feature","properties":{"resourceCoords":[502.0,1167.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8669184,40.259051]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p55","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0055","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"143.4,972.0 142.1,688.8 144.5,531.4 143.6,408.2 150.9,142.9 234.5,188.7 635.8,161.5 723.2,211.9 888.9,304.1 891.2,305.4 990.6,617.8 977.9,610.6 894.1,764.7 894.4,1236.7 526.0,1231.2 143.3,1228.5 143.4,972.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[526.0,561.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86543635077511,40.2621269814909]}},{"type":"Feature","properties":{"resourceCoords":[526.0,969.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86493749495665,40.26107015531704]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0056","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"157.2,324.9 159.5,326.2 266.5,638.1 253.6,631.1 172.9,787.9 183.8,1262.5 635.8,1250.3 912.9,1241.0 912.8,1237.5 1024.3,1232.4 1068.6,1056.7 1045.0,180.9 1046.5,166.1 1037.9,166.3 1034.9,82.9 603.4,79.6 605.2,134.0 467.8,59.5 397.1,194.4 95.8,31.2 1.0,212.3 1.0,242.6 157.2,324.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0056/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[183.0,974.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86369116827642,40.26146857609684]}},{"type":"Feature","properties":{"resourceCoords":[612.0,304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8629953888048,40.26358099247015]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p57","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0057","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"233.2,254.7 391.3,207.9 380.0,171.5 480.7,142.3 883.2,88.8 956.0,139.4 1087.0,155.8 1087.0,460.2 928.4,1261.9 867.0,1216.0 556.7,1221.9 174.0,1161.3 92.5,788.4 67.2,275.2 233.2,254.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0057/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[497.0,545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87440317224676,40.253921812409764]}},{"type":"Feature","properties":{"resourceCoords":[579.0,864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.87347524295078,40.253353728332435]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0058","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"432.1,1268.6 736.6,1214.5 737.8,1233.3 892.4,1224.0 892.9,1228.6 1071.7,1220.3 1071.3,1214.8 1062.3,1085.2 1046.0,811.6 1026.4,596.0 1015.1,475.2 982.5,247.3 775.3,1.0 1.0,1.0 1.0,40.0 46.3,948.8 88.6,966.6 116.4,1154.5 442.1,1243.3 432.1,1268.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[894.0,1096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86859142734832,40.25358242717992]}},{"type":"Feature","properties":{"resourceCoords":[1027.0,284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86928161709527,40.255775904875236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p59","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0059","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"183.2,810.7 206.2,1039.0 212.3,1159.7 213.2,1177.7 1087.0,1161.9 1087.0,1158.7 1087.0,1154.8 1001.6,1123.3 944.1,1103.6 1021.9,45.2 1004.9,44.9 848.6,41.6 656.6,34.5 164.9,21.3 154.9,139.7 32.0,44.5 33.1,1.0 1.0,1.0 1.0,574.9 183.2,810.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0059/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[186.0,836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86943184192333,40.2557618263813]}},{"type":"Feature","properties":{"resourceCoords":[1016.0,59.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86791646013401,40.25866795121494]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p5A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.1,1150.1 569.4,1142.2 1039.8,1144.5 1034.0,627.4 1035.9,148.8 564.6,163.2 45.4,170.0 46.9,650.7 41.0,752.1 1.0,943.7 1.0,1150.2 41.1,1150.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[541.0,1157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88124638879627,40.260260642708246]}},{"type":"Feature","properties":{"resourceCoords":[535.0,157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88276104264973,40.26108076908396]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005B/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p5B","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005B/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005B","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"98.6,1173.6 574.0,1175.0 1059.0,1181.8 1057.0,1115.1 1067.9,684.2 1048.4,246.3 1048.0,162.0 1087.0,162.4 1087.0,1.0 347.9,1.0 329.7,172.8 158.4,180.1 116.7,181.9 104.2,658.5 98.6,1173.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005B/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[574.0,1175.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8802213,40.2614018]}},{"type":"Feature","properties":{"resourceCoords":[1048.0,162.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8812793,40.2627729]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005C/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p5C","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005C/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005C","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1087.0,161.2 1087.0,1.0 102.6,1.0 102.4,152.7 63.0,152.3 63.3,237.4 82.5,680.0 71.0,1115.5 73.0,1183.0 523.5,1194.5 1022.1,1202.3 1021.0,684.0 1022.5,169.6 1087.0,161.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005C/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1021.0,684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8794721,40.2634635]}},{"type":"Feature","properties":{"resourceCoords":[73.0,1183.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8796994,40.2619655]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005D/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p5D","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005D/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005D","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"121.0,115.8 123.8,1.0 123.4,1.0 57.5,172.6 121.8,614.2 82.4,1158.0 563.2,1176.7 1048.8,1201.9 1069.7,722.8 1067.5,565.5 1033.4,364.3 1016.3,224.5 605.1,216.9 116.0,189.0 121.0,115.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005D/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[579.0,695.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8815655,40.2587049]}},{"type":"Feature","properties":{"resourceCoords":[116.0,189.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8828599,40.2585355]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005E/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p5E","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.48"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005E/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005E","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"983.2,1164.4 969.5,701.9 976.4,220.4 528.8,219.4 26.3,228.3 1.0,228.4 1.0,426.1 31.2,559.8 41.8,713.7 47.0,1184.0 120.2,1183.4 402.4,1180.9 535.6,1179.8 945.2,1165.8 983.2,1164.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005E/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[523.0,703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8804795,40.2598765]}},{"type":"Feature","properties":{"resourceCoords":[47.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8802627,40.258882]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005F/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p5F","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005F/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005F","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"60.6,679.0 58.5,218.1 1055.3,205.1 1050.7,339.4 1079.8,330.9 1087.0,339.6 1087.0,1009.7 1080.2,1011.0 1039.4,1018.9 577.1,1091.5 66.9,1162.7 60.6,679.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0005F/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[561.0,681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8833032,40.2614919]}},{"type":"Feature","properties":{"resourceCoords":[1039.0,681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8826943,40.2619921]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p6","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0006","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"61.8,713.2 68.0,210.3 542.0,199.0 1025.8,192.8 1004.7,262.4 1007.8,694.6 1015.6,930.5 1013.9,1171.5 568.0,1186.5 77.1,1196.2 61.8,713.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[542.0,199.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8802213,40.2614018]}},{"type":"Feature","properties":{"resourceCoords":[541.0,1187.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8787278,40.2605728]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p60","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0060","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"482.7,1199.2 265.3,1146.6 206.0,1133.7 160.9,74.7 167.0,74.1 463.1,45.1 647.6,45.2 817.0,39.0 815.5,184.4 815.1,241.0 815.1,244.6 816.1,245.4 985.1,1034.0 512.4,1222.8 482.7,1199.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[820.0,202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86551710144425,40.25895416016266]}},{"type":"Feature","properties":{"resourceCoords":[476.0,1201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86554702415026,40.25604416228457]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p61","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0061","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.4,425.5 137.4,277.4 160.4,277.9 166.4,27.1 556.0,30.2 930.9,36.1 930.5,1032.3 985.9,1032.9 937.2,1051.1 903.7,1281.6 804.4,1280.5 804.5,1264.7 421.3,1243.6 285.3,1294.3 131.7,487.6 130.7,486.7 132.4,425.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[932.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86246533965391,40.25883916023347]}},{"type":"Feature","properties":{"resourceCoords":[555.0,294.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86430252709395,40.259718908450736]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p62","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0062","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"547.0,47.0 820.8,44.2 820.8,40.7 931.0,38.3 928.0,49.2 959.7,76.2 952.0,197.6 1024.1,270.2 1025.1,1155.5 980.2,1165.1 935.1,1269.7 552.0,1296.6 551.9,1283.4 551.7,1269.0 73.6,1263.8 106.3,1038.9 153.8,1021.2 99.7,1020.6 100.3,48.5 547.0,47.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[100.0,544.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8627491,40.2594284]}},{"type":"Feature","properties":{"resourceCoords":[974.0,1025.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8591697,40.2589978]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p63","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.50"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0063","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"250.0,1215.1 225.2,918.4 101.2,417.4 127.0,274.1 208.3,198.4 243.6,216.4 335.5,73.6 645.0,80.6 642.4,99.3 796.0,120.8 795.5,125.4 972.6,152.6 947.7,327.5 927.4,470.1 913.4,669.5 909.7,721.6 868.8,1303.1 590.5,1275.7 285.0,1251.2 250.0,1215.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0063/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[749.0,1017.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86675030230019,40.25115436630886]}},{"type":"Feature","properties":{"resourceCoords":[749.0,510.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8677728705128,40.25230304697922]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p64","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0064","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.3,1095.5 142.5,952.6 122.4,771.8 106.5,643.0 75.8,370.9 47.2,174.8 936.1,73.9 1046.0,103.0 1050.1,121.8 1051.0,1349.0 1034.1,1331.8 1032.4,1214.2 195.0,1295.2 194.4,1291.7 158.3,1095.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0064/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[80.0,400.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8684342,40.2543916]}},{"type":"Feature","properties":{"resourceCoords":[1046.0,103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8655262,40.2560547]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p65","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.44"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0065","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"408.9,1253.5 51.9,1282.9 51.5,1349.0 36.4,1349.0 40.9,228.3 37.0,210.0 65.4,233.8 662.8,12.9 1030.6,34.2 1027.0,771.8 1032.0,773.7 1013.0,1203.8 1087.0,1197.7 1087.0,1206.0 1087.0,1235.8 788.0,1237.0 600.5,1237.7 408.9,1238.5 408.9,1253.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0065/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[37.0,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8655262,40.2560547]}},{"type":"Feature","properties":{"resourceCoords":[788.0,1237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8616227,40.2540607]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p66","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0066","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"633.8,1198.1 634.0,1231.0 183.2,1236.0 119.5,1236.7 119.2,1197.8 43.7,1204.5 59.9,765.4 54.8,763.5 53.0,25.9 630.6,29.6 630.8,44.0 631.0,57.3 1015.8,28.5 997.2,72.0 1086.5,316.6 1058.6,1225.2 1023.5,1280.1 1063.0,1298.2 1063.2,1328.1 929.7,1263.1 792.3,1199.4 781.2,1199.3 633.8,1198.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[181.0,990.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8606769,40.2550508]}},{"type":"Feature","properties":{"resourceCoords":[634.0,1231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8588414,40.2548439]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p67","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0067","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"893.7,173.1 889.1,603.2 849.5,657.1 847.4,1102.3 795.9,1197.0 685.2,1226.1 430.2,1048.4 213.6,266.6 265.0,172.2 570.0,166.6 848.4,166.3 893.7,173.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[843.0,1197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86405908972121,40.248191846473446]}},{"type":"Feature","properties":{"resourceCoords":[843.0,173.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86582310243058,40.250667561273]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p68","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0068","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"160.4,769.8 114.0,769.0 20.1,188.7 12.2,140.2 859.9,76.5 859.1,195.2 875.7,213.0 877.3,136.7 893.0,135.9 894.6,67.4 1003.5,60.2 1066.3,274.7 1052.2,274.4 1046.0,527.8 1058.5,528.0 1011.6,783.2 936.4,782.0 935.5,818.5 905.1,817.9 901.9,781.5 868.9,781.0 830.3,1010.9 732.8,973.5 637.2,1000.7 595.2,1096.3 522.5,1105.6 499.4,1165.9 233.7,1165.1 213.2,1202.4 160.4,769.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[876.0,525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8635966,40.2520504]}},{"type":"Feature","properties":{"resourceCoords":[114.0,769.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8658177,40.2506907]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p69","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0069","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"685.9,810.2 687.2,770.0 1049.8,767.9 1050.8,520.2 1049.2,28.1 685.3,31.5 303.6,34.9 303.6,50.1 50.0,72.3 115.5,279.0 101.8,279.1 101.1,525.0 113.2,525.0 73.1,773.6 1.0,774.0 1.0,809.5 685.9,810.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[305.0,524.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8623255,40.252404]}},{"type":"Feature","properties":{"resourceCoords":[1050.0,275.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8600624,40.2537639]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0007","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"337.6,1191.7 200.4,1138.5 94.3,806.3 93.9,593.8 154.5,391.9 133.2,294.6 224.5,177.0 365.1,180.0 366.9,148.3 621.6,154.4 877.1,159.0 860.7,644.4 855.7,880.5 852.6,1128.2 601.5,1158.8 351.5,1186.0 337.6,1191.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[862.0,639.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88458981111626,40.26142876341074]}},{"type":"Feature","properties":{"resourceCoords":[363.0,156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.88711960769393,40.26127662939973]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p70","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0070","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"88.8,792.5 94.0,1033.0 312.0,1033.2 427.0,1027.8 721.6,1027.0 868.9,1022.8 974.0,1033.0 974.8,1090.3 990.5,1045.3 1024.4,1051.9 1024.9,125.0 961.5,96.6 961.9,126.6 827.8,62.6 691.9,1.0 531.1,1.0 531.5,32.9 80.3,41.6 87.2,541.0 88.8,792.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[542.0,534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8582123,40.2535483]}},{"type":"Feature","properties":{"resourceCoords":[94.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8591502,40.2518437]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0076__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p76 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.79"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2750.8"},{"label":"split_canvas_w","value":"2198.8"},{"label":"split_canvas_h","value":"2649.2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0076__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0076","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"98.2,1253.3 532.3,1278.6 524.8,1207.6 455.8,1166.9 476.3,965.4 426.0,788.9 374.0,824.5 204.1,764.9 106.2,784.9 68.3,986.7 98.2,1253.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0076__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,687.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.85483948064534,40.23965825251724]}},{"type":"Feature","properties":{"resourceCoords":[549.7,687.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.85370550608936,40.240921490858504]}},{"type":"Feature","properties":{"resourceCoords":[549.7,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.85170781456782,40.23987950491546]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.8528417891238,40.23861626657419]}},{"type":"Feature","properties":{"resourceCoords":[416.8,1215.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8523888,40.2397862]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p78","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0078/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0078","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"422.0,822.6 456.7,813.9 613.5,1183.0 551.2,1210.3 504.7,1230.8 463.5,1132.1 258.5,1258.9 108.0,921.0 59.7,935.3 68.8,577.0 62.9,569.2 33.5,272.2 100.0,274.4 290.4,539.0 287.9,856.2 339.6,835.3 400.1,828.1 422.0,822.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0078/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[292.0,857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86036883851487,40.248327182069396]}},{"type":"Feature","properties":{"resourceCoords":[105.0,295.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8617267714675,40.24959555604405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0079/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p79","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.52"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0079/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0079","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"288.4,709.5 257.4,713.0 230.9,723.5 233.1,561.4 136.4,425.7 102.4,424.4 116.7,576.3 91.4,542.6 106.7,503.1 87.0,484.8 67.7,175.2 32.9,161.8 52.6,46.4 69.2,46.7 70.7,65.0 440.7,74.5 441.9,53.7 629.4,57.2 627.8,179.8 738.8,183.7 797.5,183.1 947.5,187.8 1022.6,188.3 1076.0,195.4 1075.3,224.6 1068.8,241.5 1055.3,476.9 1056.7,1033.5 1009.7,1210.5 905.7,1189.0 854.4,1238.6 725.7,1204.9 667.0,1211.6 649.2,1236.8 434.1,1212.4 389.6,1349.0 379.2,1349.0 376.1,1312.3 356.1,1248.7 229.9,963.6 214.9,929.4 320.0,865.0 340.8,915.6 396.5,891.5 317.3,702.4 288.4,709.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0079/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1039.0,685.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.85513980590646,40.25009645256363]}},{"type":"Feature","properties":{"resourceCoords":[230.0,76.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86204536665944,40.25159108850972]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p8","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0008","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"519.0,242.9 663.4,285.3 1032.0,409.4 1087.0,254.8 1087.0,1249.5 1076.5,1340.0 1063.0,1340.0 1033.3,1349.0 1036.5,1211.6 17.2,1236.5 14.2,266.7 519.0,242.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[528.0,1223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.883952,40.2619461]}},{"type":"Feature","properties":{"resourceCoords":[315.0,172.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8856148,40.2627415]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p80","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0080/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0080","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"321.8,1349.0 320.1,1349.0 316.2,1349.0 311.6,1282.2 219.7,1187.3 177.8,1207.4 147.2,1175.8 175.6,1134.7 118.4,1026.5 160.8,971.9 42.4,800.5 73.9,115.8 175.2,51.7 931.8,129.5 935.7,121.7 985.6,129.3 977.5,573.5 968.0,1185.1 964.7,1211.0 793.0,1211.7 793.1,1208.3 643.0,1226.9 643.1,1221.8 442.9,1255.2 386.7,1222.1 325.5,1217.5 321.8,1349.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0080/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[971.0,570.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.85980239603879,40.24710594546549]}},{"type":"Feature","properties":{"resourceCoords":[341.0,570.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.86138608786267,40.24585831222027]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Harrisburg, Pennsylvania | 1956 | sanborn07707_008 p9","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:35:29Z","modified":"2026-10-24T15:35:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0009","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"669.1,1066.4 433.4,1143.4 442.0,1173.0 312.2,1215.9 322.4,1185.2 78.8,1022.7 110.5,259.3 101.7,236.9 268.1,207.7 269.2,165.6 640.8,172.6 710.6,383.4 770.6,578.6 801.2,663.0 878.0,900.3 904.9,987.7 669.1,1066.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824hm:g3824hm_g07707195601:07707_01_1956-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[509.0,381.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8882756,40.2633136]}},{"type":"Feature","properties":{"resourceCoords":[785.0,620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8869333,40.2630997]}}]}}]}