{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn07660_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Erie, Pennsylvania | 1921 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"86"},{"label":"placed","value":"77"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 73, georef-snap 7"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p0__1 (tier 4, 42.12364,-80.08128 +/-1767m); p0__2 (tier 4, 42.12364,-80.08128 +/-1767m); p2__2 (tier 1, 42.12843,-80.08642 +/-100m); p2__3 (tier 1, 42.12932,-80.10020 +/-100m); p83 (tier 1, 42.13630,-80.09453 +/-257m); p84 (tier 1, 42.13654,-80.09191 +/-255m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p1","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1451.0,1824.0 227.0,1829.6 230.8,66.8 841.4,66.2 842.0,0.0 1613.0,0.0 1613.0,65.6 1456.2,66.1 1451.0,1824.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,653.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0872089,42.1323881]}},{"type":"Feature","properties":{"resourceCoords":[1451.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0845782,42.1309659]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p10","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1328.3,1890.0 262.0,1878.0 306.9,1384.8 381.4,1278.0 538.6,1242.2 576.0,22.9 1613.0,0.0 1613.0,1111.4 1348.0,1057.5 1328.3,1890.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[262.0,1878.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0963376,42.130207]}},{"type":"Feature","properties":{"resourceCoords":[1336.0,1549.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0943362,42.1316461]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"106.0,1890.7 104.0,1041.5 376.8,1090.9 348.3,0.0 1430.6,0.0 1457.8,1870.9 106.0,1890.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.09618676430395,42.13407526752522]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.09267100195007,42.13534181299809]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0906596630383,42.13222782992122]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.09417542539218,42.13096128444835]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p12","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1455.0,1867.0 -0.0,1866.5 -0.0,-0.0 1613.0,0.0 1613.0,710.1 1482.1,708.5 1455.0,1867.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[841.0,1867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0891957,42.1328538]}},{"type":"Feature","properties":{"resourceCoords":[1455.0,1867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.087848,42.1333504]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p13","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1381.0,1826.0 13.2,1827.3 -0.0,1913.0 -0.0,-0.0 307.0,0.0 306.9,73.8 1385.2,76.3 1381.0,1826.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[306.0,1826.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.096815,42.1264622]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,1826.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0944369,42.1273326]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p14","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1321.4,1821.0 239.1,1822.6 249.0,64.0 1327.3,64.3 1321.4,1821.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1325.0,1234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0926941,42.1291725]}},{"type":"Feature","properties":{"resourceCoords":[249.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0963376,42.130207]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p15","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1360.1,67.9 1358.9,1820.3 282.6,1817.7 285.1,77.0 1360.1,67.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[285.0,653.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0933349,42.1301324]}},{"type":"Feature","properties":{"resourceCoords":[285.0,1236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0926941,42.1291725]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p16","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1354.0,1816.0 281.3,1817.2 279.2,72.8 1354.0,70.0 1354.0,1816.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1354.0,1816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0872751,42.1299632]}},{"type":"Feature","properties":{"resourceCoords":[1354.0,70.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0891957,42.1328538]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p17","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1353.8,1846.7 -0.0,1842.7 -0.0,44.2 1352.0,43.0 1353.8,1846.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[287.0,1260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0954762,42.12444]}},{"type":"Feature","properties":{"resourceCoords":[1352.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0944369,42.1273326]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p18","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1347.2,26.1 1341.5,1858.5 263.3,1857.2 267.4,27.6 1347.2,26.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[265.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0937601,42.1263137]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0913801,42.127192]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p19","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1368.0,1851.7 295.3,1856.0 297.0,45.0 1368.0,47.3 1368.0,1851.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1370.0,1270.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0883137,42.1270642]}},{"type":"Feature","properties":{"resourceCoords":[297.0,45.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0920602,42.1282128]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p20","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1349.9,52.3 1345.4,1847.0 277.0,1850.5 280.0,50.0 1349.9,52.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[280.0,1270.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0883137,42.1270642]}},{"type":"Feature","properties":{"resourceCoords":[280.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0896681,42.129086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p21","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 7.3,45.5 1374.0,52.4 1371.2,1913.0 14.8,1913.0 14.9,1852.5 -0.0,1913.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1374.0,1239.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0911385,42.1223905]}},{"type":"Feature","properties":{"resourceCoords":[299.0,45.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0948297,42.1234762]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p22","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1343.0,1848.5 272.0,1850.0 271.0,51.0 1343.0,48.9 1343.0,1848.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1342.0,628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0894315,42.1242607]}},{"type":"Feature","properties":{"resourceCoords":[271.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.092441,42.12434]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p23","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1359.0,1848.5 279.2,1849.2 292.0,43.0 1375.1,45.2 1359.0,1848.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[292.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0900646,42.1252143]}},{"type":"Feature","properties":{"resourceCoords":[1359.0,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0857157,42.1231399]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p24","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1341.4,1844.7 267.3,1842.0 270.4,49.5 1345.0,43.0 1341.4,1844.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1345.0,620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0846596,42.1260334]}},{"type":"Feature","properties":{"resourceCoords":[1345.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0852929,42.1269854]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,730.9 1613.0,1913.0 -0.0,1913.0 -0.0,173.8 1359.0,179.2 1359.0,730.0 1613.0,730.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0935975459641,42.1204626180811]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.09003958567266,42.12178510312214]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08793986275616,42.1186330677517]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0914978230476,42.11731058271066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1339.0,116.3 1358.9,1326.2 1613.0,1322.8 1613.0,1535.6 1090.9,1538.5 1092.0,1632.8 537.2,1635.8 525.4,734.5 270.9,737.0 262.9,125.5 1339.0,116.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0026/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.09118506255345,42.121378121468496]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08761045518979,42.122663246770195]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0855700207527,42.11949650696991]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08914462811636,42.11821138166821]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0027","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"537.3,1319.6 283.6,1317.3 290.8,109.4 1369.6,117.6 1355.5,1545.9 532.5,1532.0 537.3,1319.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08885441023092,42.12218904345493]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08531275670802,42.123535991864195]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08317413446086,42.120398488797626]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08671578798376,42.11905154038836]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p28","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1350.5,107.4 1350.8,1759.1 283.9,1761.9 278.0,108.0 1350.5,107.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1348.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.082072,42.1221035]}},{"type":"Feature","properties":{"resourceCoords":[278.0,108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0857157,42.1231399]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p29","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1677.0 -0.0,1490.8 6.1,318.6 1086.0,313.0 1084.4,932.6 1363.8,931.2 1363.0,1676.0 -0.0,1677.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[285.0,1195.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0899226,42.1160995]}},{"type":"Feature","properties":{"resourceCoords":[1364.0,1195.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0875381,42.1169745]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p2 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"18"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 0.0,339.1 0.0,1313.2 229.7,1307.8 726.9,1292.7 725.0,1792.0 724.7,1913.0 866.8,1913.0 1613.0,1913.0 1613.0,0.0 1359.0,0.0 1064.0,0.0 510.0,0.0 224.0,0.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[799.0,1256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0845973,42.128449]}},{"type":"Feature","properties":{"resourceCoords":[187.0,40.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0872751,42.1299632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002s/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p2s","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002s/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002s","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"218.7,1850.1 229.4,43.0 1613.0,44.0 1613.0,1849.7 218.7,1850.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0002s/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[227.0,1267.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0859217,42.1279503]}},{"type":"Feature","properties":{"resourceCoords":[1447.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0845782,42.1309659]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p3","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"216.9,1843.3 227.1,46.6 1442.7,43.7 1437.2,1843.8 216.9,1843.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[225.0,622.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0846596,42.1260334]}},{"type":"Feature","properties":{"resourceCoords":[832.0,1232.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0826318,42.1255253]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p30","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1356.7,1647.7 280.1,1647.8 279.0,904.0 -0.0,906.1 -0.0,287.3 532.8,283.2 532.2,0.0 1085.3,0.0 1085.2,1150.5 1355.8,1145.7 1356.7,1647.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[279.0,904.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.087826,42.1174073]}},{"type":"Feature","properties":{"resourceCoords":[775.0,1156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.086452,42.1173938]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p31","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1310.7,0.0 1328.0,1700.5 265.0,1700.5 264.1,1210.5 -0.0,1215.2 0.0,-0.0 1310.7,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[265.0,1700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.084627,42.1170554]}},{"type":"Feature","properties":{"resourceCoords":[1328.0,1700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0822129,42.1179353]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p32","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"267.5,1913.0 268.6,179.9 1340.0,190.0 1327.7,1913.0 267.5,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[269.0,1689.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0822129,42.1179353]}},{"type":"Feature","properties":{"resourceCoords":[1340.0,190.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0815183,42.1212765]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p33","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0033","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1347.0,181.0 1347.2,1449.0 818.3,1451.9 818.2,1913.0 -0.0,1913.0 -0.0,183.7 282.8,183.4 1347.0,181.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[283.0,674.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0888545,42.1144917]}},{"type":"Feature","properties":{"resourceCoords":[1347.0,181.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0870131,42.1161852]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p34","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0034","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"281.4,174.7 1348.0,177.9 1346.3,1442.8 279.4,1446.9 281.4,174.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[279.0,668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0864726,42.1153658]}},{"type":"Feature","properties":{"resourceCoords":[279.0,1652.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0853836,42.1137354]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p35","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0035","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"251.0,1660.0 236.1,187.8 1317.0,179.0 1327.7,1643.5 251.0,1660.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[251.0,1660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.083005,42.1146189]}},{"type":"Feature","properties":{"resourceCoords":[1317.0,179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0822129,42.1179353]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p36","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0036","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1335.5,1656.5 263.0,1662.0 264.1,408.8 1327.8,396.5 1335.5,1656.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[263.0,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0822129,42.1179353]}},{"type":"Feature","properties":{"resourceCoords":[263.0,1662.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0806086,42.1155082]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p37","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0037","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 530.9,0.0 530.9,0.0 1598.4,0.0 1598.5,203.8 1334.1,203.9 1333.3,1664.4 1599.3,1665.0 1599.5,1913.0 531.4,1913.0 -0.0,1913.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0037/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08679308717743,42.11363659482844]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08319835613302,42.1149701550717]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08108127868418,42.11178519860119]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08467600972858,42.11045163835793]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p38","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0038","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1344.8,1904.0 -0.0,1913.0 -0.0,444.4 1330.7,432.5 1344.8,1904.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0038/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.084529932187,42.111420146636185]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08095092990082,42.11271820974398]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0788902771217,42.10954707884775]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08246927940787,42.10824901573995]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p39","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0039","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1344.6,191.4 1339.2,1664.5 -0.0,1672.0 -0.0,200.0 1344.6,191.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[267.0,346.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0828394,42.114376]}},{"type":"Feature","properties":{"resourceCoords":[267.0,1671.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0813861,42.1121867]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p4","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1418.2,100.5 1413.3,1763.2 191.5,1751.1 198.9,102.7 1418.2,100.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[191.0,1251.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.082072,42.1221035]}},{"type":"Feature","properties":{"resourceCoords":[1123.0,1764.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0794264,42.1220187]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p40","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0040","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"279.1,1676.2 286.2,203.4 1351.0,201.0 1351.0,581.1 1613.0,580.4 1613.0,691.9 1351.0,693.2 1351.0,1674.0 279.1,1676.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1351.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.077159,42.114757]}},{"type":"Feature","properties":{"resourceCoords":[1351.0,201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.07824,42.1163807]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p41","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0041","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"266.9,1913.0 269.0,182.0 1348.0,178.1 1353.4,1913.0 266.9,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[267.0,1712.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0797148,42.1096759]}},{"type":"Feature","properties":{"resourceCoords":[1347.0,1712.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.077327,42.1105533]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p42","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0042","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1338.0,188.3 1333.0,1718.0 1613.0,1717.0 1613.0,1913.0 272.3,1903.5 270.5,187.0 1338.0,188.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[270.0,187.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0790047,42.1130697]}},{"type":"Feature","properties":{"resourceCoords":[1333.0,1718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.074931,42.1114105]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p43","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0043","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"462.8,1845.8 462.3,1813.4 81.1,1818.8 85.9,1281.7 150.2,1277.9 145.0,932.3 -0.0,934.5 -0.0,-0.0 1613.0,0.0 1613.0,1540.7 1451.0,1543.0 1454.9,1830.6 462.8,1845.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[918.0,1838.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0841144,42.1347296]}},{"type":"Feature","properties":{"resourceCoords":[1451.0,1543.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.082352,42.136563]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p5","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1447.0,211.6 1449.0,1694.3 837.0,1694.0 837.0,1913.0 223.0,1913.0 220.7,200.8 1447.0,211.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,1694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0785077,42.1193159]}},{"type":"Feature","properties":{"resourceCoords":[837.0,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0801378,42.1217634]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p50","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0050","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"384.7,1559.0 387.8,21.0 -0.0,20.2 -0.0,-0.0 1613.0,0.0 1613.0,1913.0 1446.8,1913.0 1446.2,1834.8 226.3,1848.2 223.0,1561.0 384.7,1559.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[774.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0792669,42.1365123]}},{"type":"Feature","properties":{"resourceCoords":[223.0,1561.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.082352,42.136563]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p51","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0051","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1337.6,68.8 1335.0,1811.8 266.8,1810.3 272.0,72.0 1337.6,68.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1336.0,1232.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0828306,42.1328016]}},{"type":"Feature","properties":{"resourceCoords":[272.0,72.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0864905,42.1338496]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p52","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0052","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1326.4,70.8 1318.0,1814.0 242.8,1813.0 251.0,67.0 1326.4,70.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[251.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0841144,42.1347296]}},{"type":"Feature","properties":{"resourceCoords":[1318.0,1814.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0797965,42.1327254]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p53","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0053","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1373.5,71.8 1369.9,1913.0 275.3,1913.0 273.1,73.8 1373.5,71.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[271.0,1236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0804459,42.1336863]}},{"type":"Feature","properties":{"resourceCoords":[1368.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0786379,42.1355412]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p54","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0054","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1815.7 254.2,1818.8 253.8,62.4 1613.0,62.4 1613.0,1815.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1313.0,1818.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.075007,42.134484]}},{"type":"Feature","properties":{"resourceCoords":[1313.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0769184,42.1373657]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p55","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0055","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1373.8,1833.5 485.8,1843.6 471.4,52.0 1373.0,50.0 1373.8,1833.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[309.0,1269.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0832336,42.1289452]}},{"type":"Feature","properties":{"resourceCoords":[1373.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0821911,42.1318405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p56","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0056","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"276.2,1845.0 288.5,52.0 1365.6,53.7 1352.0,1853.0 276.2,1845.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0056/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1352.0,1853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0778271,42.1297498]}},{"type":"Feature","properties":{"resourceCoords":[288.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0821911,42.1318405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p57","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0057","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"285.4,1850.8 288.2,147.7 1381.9,148.6 1384.0,1847.0 285.4,1850.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0057/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[285.0,1270.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0784666,42.1307105]}},{"type":"Feature","properties":{"resourceCoords":[1384.0,1270.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0760146,42.1316068]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p58","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0058","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"261.0,1847.0 235.7,579.8 255.8,54.6 1613.0,47.1 1610.2,1839.8 261.0,1847.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1311.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0743313,42.1334865]}},{"type":"Feature","properties":{"resourceCoords":[261.0,1847.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.07538,42.1306522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p59","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0059","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1371.9,1844.1 306.0,1846.0 310.2,47.8 1374.1,40.6 1371.9,1844.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0059/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1372.0,624.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0795828,42.1279104]}},{"type":"Feature","properties":{"resourceCoords":[306.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.080606,42.1250127]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"212.9,1913.0 204.0,274.5 820.0,276.1 819.4,57.3 1433.5,59.2 1436.8,1913.0 212.9,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.08038379283276,42.11874181436439]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0768138726843,42.120058507904666]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07472340219844,42.116895790622]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07829332234691,42.11557909708173]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p60","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0060","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1349.5,1842.9 279.4,1839.5 286.1,34.0 1360.4,42.0 1349.5,1842.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[283.0,618.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0795828,42.1279104]}},{"type":"Feature","properties":{"resourceCoords":[1353.0,1234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0765172,42.1277771]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p61","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0061","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1399.0,46.0 1399.0,1844.0 301.6,1847.8 302.1,49.8 1399.0,46.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1399.0,1237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.074068,42.1286784]}},{"type":"Feature","properties":{"resourceCoords":[1399.0,626.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0747411,42.129691]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p62","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0062","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1846.8 1308.1,1846.2 254.0,1845.0 260.6,44.4 1613.0,47.7 1613.0,1846.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1317.0,626.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0723826,42.1305597]}},{"type":"Feature","properties":{"resourceCoords":[254.0,1845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0733993,42.1276724]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p63","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0063","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1369.7,1775.9 297.8,1782.7 296.6,116.4 1365.0,109.0 1369.7,1775.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0063/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[297.0,721.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0799433,42.1240131]}},{"type":"Feature","properties":{"resourceCoords":[1365.0,109.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0782318,42.1258922]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p64","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0064","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"297.6,1764.9 307.0,102.0 1376.0,106.4 1366.8,1764.4 297.6,1764.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0064/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,1766.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0751886,42.1235863]}},{"type":"Feature","properties":{"resourceCoords":[307.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0782318,42.1258922]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p65","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0065","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1388.3,1746.4 294.6,1764.7 287.6,112.0 1382.1,104.8 1388.3,1746.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0065/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[293.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0745534,42.1248302]}},{"type":"Feature","properties":{"resourceCoords":[1384.0,714.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0727265,42.1266602]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p66","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0066","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1589.6 266.2,1586.4 270.8,102.8 1613.0,104.5 1613.0,1589.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1323.0,714.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0703729,42.127527]}},{"type":"Feature","properties":{"resourceCoords":[266.0,1748.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0715838,42.1249456]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p67","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0067","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"300.0,1470.5 298.8,205.9 1082.1,203.2 1087.0,1472.9 300.0,1470.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[299.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0776973,42.1206338]}},{"type":"Feature","properties":{"resourceCoords":[1365.0,202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0763971,42.1231392]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p68","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0068","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1046.3,1191.4 1353.2,1192.2 1349.1,1681.3 283.0,1683.0 282.0,1482.0 -0.0,1480.1 -0.0,203.3 1054.5,204.5 1046.3,1191.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[283.0,1189.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0753073,42.1215133]}},{"type":"Feature","properties":{"resourceCoords":[283.0,1683.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0747595,42.120699]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p69","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0069","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1407.1,180.9 1414.5,1682.7 308.0,1686.0 308.0,1195.0 -0.0,1196.8 -0.0,206.0 1407.1,180.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[308.0,1195.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0729255,42.1223882]}},{"type":"Feature","properties":{"resourceCoords":[308.0,1686.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0723922,42.1215787]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p7","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"9"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"231.0,854.0 1451.0,855.0 1444.8,1838.8 835.1,1836.5 834.6,1913.0 224.6,1913.0 231.0,854.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[231.0,854.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0776987,42.1155676]}},{"type":"Feature","properties":{"resourceCoords":[1451.0,855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0749946,42.1165712]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p70","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0070","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1297.3,1707.2 237.5,1709.2 247.0,64.0 1300.8,71.8 1613.0,72.2 1613.0,1913.0 1302.8,1913.0 1297.3,1707.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1298.0,492.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0689319,42.1253781]}},{"type":"Feature","properties":{"resourceCoords":[247.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0717627,42.1252132]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p71","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0071","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"244.9,0.0 1318.6,0.0 1321.5,1498.7 249.4,1505.2 244.9,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1321.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0736844,42.1190727]}},{"type":"Feature","properties":{"resourceCoords":[1321.0,201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0747595,42.120699]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p72","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0072","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1331.0,197.0 1321.5,1913.0 241.9,1913.0 255.0,197.0 1331.0,197.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0072/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[255.0,197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0747595,42.120699]}},{"type":"Feature","properties":{"resourceCoords":[1331.0,197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0723922,42.1215787]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p73","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0073","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.6,1661.2 297.1,180.4 1403.2,184.8 1397.1,1658.5 293.6,1661.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0073/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[297.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0718441,42.1207608]}},{"type":"Feature","properties":{"resourceCoords":[1401.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0693978,42.121663]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p74","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0074","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1384.0,1673.8 317.0,1657.3 327.0,180.0 1401.6,176.6 1407.5,385.3 1613.0,385.0 1613.0,1913.0 1381.5,1913.0 1384.0,1673.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0074/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1386.0,1169.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0665057,42.1217238]}},{"type":"Feature","properties":{"resourceCoords":[327.0,180.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0699362,42.1224755]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0075/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p75","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0075/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0075","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"277.6,1642.3 281.0,664.0 -0.0,664.5 -0.0,555.1 281.9,555.2 284.3,0.0 1353.4,0.0 1347.3,1643.4 277.6,1642.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0075/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[281.0,664.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0749946,42.1165712]}},{"type":"Feature","properties":{"resourceCoords":[1351.0,664.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0726074,42.1174529]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0076/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p76","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0076/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0076","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1341.2,1649.7 272.0,1652.0 272.6,405.8 1342.2,399.8 1341.2,1649.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0076/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1342.0,666.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0702294,42.1183306]}},{"type":"Feature","properties":{"resourceCoords":[272.0,1652.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0715277,42.1158291]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0077/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p77","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0077/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0077","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"308.0,1657.0 308.0,177.3 1411.3,170.8 1411.0,1653.7 308.0,1657.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0077/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[308.0,670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0702294,42.1183306]}},{"type":"Feature","properties":{"resourceCoords":[308.0,1657.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0691494,42.1167052]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p78","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0078/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0078","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"234.2,178.2 1292.7,186.6 1292.0,423.9 1521.7,422.2 1518.5,0.0 1613.0,0.0 1613.0,1913.0 1581.8,1913.0 1581.0,1647.0 236.0,1653.0 234.2,178.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0078/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1291.0,666.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0654304,42.1200999]}},{"type":"Feature","properties":{"resourceCoords":[236.0,1653.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0667042,42.117606]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0079/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p79","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0079/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0079","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1810.2 279.4,1811.3 286.0,193.0 1361.7,194.7 1354.2,1913.0 -0.0,1913.0 -0.0,1810.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0079/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[286.0,193.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0739155,42.1149494]}},{"type":"Feature","properties":{"resourceCoords":[1355.0,1718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0698578,42.1133176]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p8","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"13"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"489.2,1838.2 214.0,1840.1 213.9,391.2 818.0,387.5 818.0,344.2 818.0,311.6 1421.9,310.2 1421.8,1913.0 493.2,1913.0 493.0,1838.2 489.2,1838.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[818.0,800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.074728,42.113638]}},{"type":"Feature","properties":{"resourceCoords":[818.0,1836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0735802,42.1119137]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p80","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0080/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0080","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"283.9,193.6 1354.2,192.7 1350.5,1913.0 280.7,1909.9 283.9,193.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0080/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[283.0,686.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0709873,42.1150163]}},{"type":"Feature","properties":{"resourceCoords":[1352.0,1176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0680715,42.1150827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p81","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0081","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"291.0,184.0 1395.0,183.7 1405.0,1913.0 286.2,1910.0 291.0,184.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0081/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1392.0,1170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0656265,42.1159829]}},{"type":"Feature","properties":{"resourceCoords":[291.0,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0691494,42.1167052]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0082/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p82","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0082/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0082","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,171.7 1613.0,1913.0 273.3,1899.7 261.8,173.3 1613.0,171.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0082/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1322.0,1158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0632682,42.116849]}},{"type":"Feature","properties":{"resourceCoords":[1322.0,172.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0643521,42.1184726]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1921 | sanborn07660_003 p9","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T20:21:14Z","modified":"2026-09-21T20:21:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.6,1865.8 292.5,1792.9 -0.0,1797.7 -0.0,-0.0 1613.0,0.0 1613.0,1211.3 1458.1,1251.7 1387.3,1359.9 1357.8,1850.8 293.6,1865.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660192101:07660_01_1921-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[288.0,1500.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0991294,42.1299465]}},{"type":"Feature","properties":{"resourceCoords":[1363.0,1514.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0966856,42.1307749]}}]}}]}