{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn07660_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Erie, Pennsylvania | 1950 | 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":"114"},{"label":"placed","value":"97"},{"label":"unplaced","value":"17"},{"label":"fit sources","value":"georef 66, georef-snap 31"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"9 sheet(s) cut into 21 panels"},{"label":"unplaced pages","value":"p0 (tier 1, 42.14333,-80.04563 +/-269m); p304__3 (tier 2, 42.13352,-80.05476 +/-417m); p305 (tier 3, 42.14606,-80.07221 +/-561m); p306 (tier 2, 42.14266,-80.07109 +/-126m); p307 (tier 1, 42.14256,-80.06616 +/-249m); p310 (tier 1, 42.10506,-80.05748 +/-270m); p318 (tier 2, 42.14473,-80.05699 +/-100m); p340__1 (tier 1, 42.14180,-80.05691 +/-230m); p366 (tier 2, 42.11874,-80.06036 +/-100m); p367__3 (tier 2, 42.11900,-80.05730 +/-100m); p371__1 (tier 2, 42.12512,-80.05370 +/-341m); p397__1 (tier 2, 42.14140,-80.03251 +/-1126m); p397__2 (tier 1, 42.14338,-80.03743 +/-633m); p453__2 (tier 1, 42.12333,-80.00484 +/-193m); p454__3 (tier 1, 42.13580,-80.04722 +/-100m); p470__1 (tier 4, 42.13174,-80.04992 +/-3900m); p470__2 (tier 4, 42.13174,-80.04992 +/-3900m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0301/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p301","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0301/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0301","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1895.5 0.0,0.0 299.7,0.0 301.5,108.8 1322.3,111.7 1327.3,1894.2 -0.0,1895.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0301/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07705970996092,42.136344881091404]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07340108080602,42.137690016804605]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0712938976935,42.134493655229484]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07495252684839,42.13314851951628]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0302/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p302","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0302/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0302","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"316.8,1901.4 310.6,265.2 1015.6,264.8 1014.1,72.2 1663.0,70.7 1663.0,1903.3 316.8,1901.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0302/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07484474209961,42.13716507910653]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07120162308726,42.13850644912421]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06909652115392,42.13531793750946]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07273964016628,42.133976567491786]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0303/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p303","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0303/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0303","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1227.4,340.6 1303.5,341.7 1303.0,703.6 1587.5,1848.7 634.1,1839.7 648.7,0.0 1163.6,0.0 1227.4,340.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0303/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[316.0,630.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0711648,42.1370985]}},{"type":"Feature","properties":{"resourceCoords":[1333.0,132.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.069483,42.1387313]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304__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 | 1950 | sanborn07660_008 p304 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6652.0"},{"label":"split_canvas_h","value":"3649.6"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.8,73.0 41.3,911.9 42.0,911.9 239.7,787.7 701.4,874.0 1470.9,858.5 1464.5,561.1 979.9,572.1 967.5,55.6 26.8,73.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[513.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0586437,42.1330804]}},{"type":"Feature","properties":{"resourceCoords":[987.0,869.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0567216,42.1320946]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p304 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3647.6"},{"label":"split_canvas_w","value":"6652.0"},{"label":"split_canvas_h","value":"2121.6"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1663.0,929.6 947.4,939.1 948.1,1127.1 -0.0,1128.0 -0.0,1409.1 1663.0,1408.0 1663.0,929.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0304__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[952.0,1409.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0533741,42.1333101]}},{"type":"Feature","properties":{"resourceCoords":[509.0,1409.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0544258,42.1329283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0311/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p311","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0311/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0311","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1528.1,455.4 1667.0,681.8 1667.0,1817.8 1612.0,1818.0 1611.0,1949.0 -0.0,1949.0 -0.0,204.4 198.8,258.2 201.5,0.0 1449.0,0.0 1448.9,365.6 1525.2,372.2 1528.1,455.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0311/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1612.0,1818.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.066065,42.139984]}},{"type":"Feature","properties":{"resourceCoords":[64.0,1818.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.069483,42.1387313]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0312/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p312","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0312/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0312","type":"ImageService3","width":1671,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"213.8,1799.2 213.3,688.9 77.5,467.7 74.6,386.5 -0.0,380.1 -0.0,-0.0 1671.0,0.0 1671.0,74.4 1547.5,74.2 1546.3,1084.5 1619.0,1084.0 1619.0,1905.0 663.0,1905.0 663.5,1797.8 213.8,1799.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0312/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1619.0,1084.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0635671,42.1423901]}},{"type":"Feature","properties":{"resourceCoords":[1619.0,1905.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0626511,42.1410143]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0313/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p313","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0313/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0313","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,700.2 -0.0,258.9 1489.2,271.1 1465.2,1850.8 288.3,1850.3 -0.0,700.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0313/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0696843912872,42.138912746189185]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06607032261034,42.14026508533131]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06395303988467,42.13710967644821]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06756710856152,42.13575733730609]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0314/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p314","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0314/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0314","type":"ImageService3","width":1671,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1793.9 -0.0,128.4 635.1,122.5 636.1,234.1 1635.4,227.3 1650.1,1789.5 675.8,1791.0 675.7,1788.7 -0.0,1793.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0314/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06643473983992,42.14010556067502]}},{"type":"Feature","properties":{"resourceCoords":[1671.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06281169134824,42.14141018153952]}},{"type":"Feature","properties":{"resourceCoords":[1671.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06077396976889,42.13825456371581]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06439701826056,42.13694994285131]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0315/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p315","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0315/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0315","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1596.7,1885.7 76.0,1887.9 75.0,1041.2 -0.0,1041.8 -0.0,-0.0 1667.0,0.0 1667.0,82.7 1488.5,81.1 1485.7,360.2 1608.0,364.0 1596.7,1885.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0315/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[75.0,1431.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0631464,42.1417564]}},{"type":"Feature","properties":{"resourceCoords":[1608.0,364.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0609365,42.144718]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0316/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p316","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0316/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0316","type":"ImageService3","width":1671,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.0,1867.8 71.2,55.9 1592.5,50.4 1603.3,1856.2 73.0,1867.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0316/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[73.0,964.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.061672,42.1395383]}},{"type":"Feature","properties":{"resourceCoords":[73.0,1427.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0611748,42.138785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0317/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p317","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0317/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0317","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.6,1949.0 122.5,282.0 -0.0,279.4 0.0,-0.0 1667.0,0.0 1667.0,1949.0 126.6,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0317/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06150381930556,42.14508231687433]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05783826391449,42.14639010702867]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05577899435177,42.14320798281493]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05944454974284,42.141900192660586]}},{"type":"Feature","properties":{"resourceCoords":[122.0,282.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0609365,42.144718]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0319/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p319","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0319/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0319","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,61.0 1027.4,58.0 1031.1,1860.2 31.3,1860.7 30.3,1949.0 -0.0,1949.0 -0.0,61.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0319/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[325.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0736654,42.1324762]}},{"type":"Feature","properties":{"resourceCoords":[1347.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0701472,42.1313766]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0320/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p320","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0320/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0320","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1340.3,1872.9 -0.0,1874.6 -0.0,60.4 1348.7,59.0 1340.3,1872.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0320/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[318.0,687.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0714292,42.1332946]}},{"type":"Feature","properties":{"resourceCoords":[318.0,1875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0701472,42.1313766]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0321/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p321","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0321/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0321","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1667.0,1767.9 1303.4,1771.0 1304.0,1835.3 283.0,1846.0 272.6,41.2 1667.0,35.0 1667.0,1767.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0321/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1296.0,955.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0666425,42.1344491]}},{"type":"Feature","properties":{"resourceCoords":[283.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0679238,42.1321981]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0322/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p322","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0322/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0322","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"653.0,64.7 1312.2,58.8 1315.6,1269.0 1031.6,1272.5 1038.4,1828.2 656.8,1805.3 653.0,64.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0322/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06829287061322,42.13583380513641]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0646689076405,42.13714227215055]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06261795336877,42.133974267900214]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0662419163415,42.13266580088607]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0323/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p323","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0323/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0323","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"290.7,64.9 692.4,40.4 692.9,0.0 1355.0,0.0 1351.7,1821.1 -0.0,1811.8 -0.0,1262.6 279.5,1261.0 290.7,64.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0323/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[280.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.064094,42.1348049]}},{"type":"Feature","properties":{"resourceCoords":[1352.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0617295,42.1356731]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0324/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p324","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0324/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0324","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1381.0,1865.0 409.3,1873.8 401.2,0.0 1367.2,0.0 1368.2,265.0 1285.2,265.6 1292.8,672.0 1373.2,671.4 1381.0,1865.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0324/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[404.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0623686,42.1366369]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.058969,42.1354852]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0325/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p325","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"18"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0325/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0325","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1617.2,103.3 1589.0,1818.8 1122.7,1811.7 1123.4,1700.2 65.7,1684.8 80.3,493.9 -0.0,493.0 -0.0,87.4 1617.2,103.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0325/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[580.0,1693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.057844,42.1358949]}},{"type":"Feature","properties":{"resourceCoords":[1604.0,918.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0564814,42.1379836]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0326/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p326","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0326/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0326","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"74.2,1949.0 73.0,168.0 1128.1,166.3 1129.2,277.5 1594.3,277.1 1596.5,1949.0 74.2,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0326/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1131.0,785.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.055985,42.135326]}},{"type":"Feature","properties":{"resourceCoords":[73.0,168.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.058969,42.1354852]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0327/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p327","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0327/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0327","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"288.6,225.3 1667.0,223.7 1667.0,1918.2 289.2,1916.8 288.6,225.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0327/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[963.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0558909,42.1398423]}},{"type":"Feature","properties":{"resourceCoords":[1340.0,1917.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0536956,42.1381044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0328/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p328","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0328/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0328","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,193.5 0.0,-0.0 1665.0,0.0 1665.0,105.2 1171.5,107.2 1172.2,190.9 1358.8,189.2 1288.7,644.7 1300.7,1477.0 1249.8,1937.1 684.2,1932.7 682.0,195.6 -0.0,193.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0328/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0564777494731,42.140887931287516]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05294407315276,42.14220423520989]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0508806692234,42.13911540603279]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05441434554375,42.13779910211042]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0329/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p329","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0329/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0329","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1351.0,8.2 1349.0,1946.2 283.0,1949.0 285.9,11.8 1351.0,8.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0329/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[283.0,976.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.054976,42.1357065]}},{"type":"Feature","properties":{"resourceCoords":[1347.0,976.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0526725,42.1365476]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0330/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p330","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0330/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0330","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1188.8,0.0 1173.1,542.1 1665.0,534.1 1665.0,1949.0 310.4,1928.9 303.7,0.0 1188.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0330/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[304.0,961.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0526725,42.1365476]}},{"type":"Feature","properties":{"resourceCoords":[304.0,455.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0532083,42.1373636]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0331/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p331","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0331/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0331","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"91.0,439.0 151.6,67.5 -0.0,68.3 0.0,0.0 1664.0,0.0 1664.0,1949.0 28.6,1949.0 64.0,1500.8 49.2,1493.5 94.2,1118.3 91.0,439.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0331/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[91.0,778.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0526126,42.1402308]}},{"type":"Feature","properties":{"resourceCoords":[91.0,439.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0530603,42.140885]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0334/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p334","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0334/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0334","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,297.6 452.6,286.4 443.9,0.0 1673.0,0.0 1673.0,625.5 1651.2,626.0 1648.2,686.8 1656.2,1862.3 367.2,1873.5 368.7,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0334/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.048528024895,42.13965278077939]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04407685850727,42.14122619304277]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04162226852948,42.13735389123186]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04607343491722,42.135780478968485]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0335/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p335","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0335/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0335","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,63.5 1311.4,54.1 1330.3,1899.9 258.9,1909.9 259.6,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0335/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0730996794129,42.13042438952672]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06943741508594,42.131741890510526]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06736500843773,42.128528551368795]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0710272727647,42.12721105038499]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0336/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p336","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0336/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0336","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"333.8,1888.6 339.3,57.9 1673.0,54.7 1673.0,1886.5 333.8,1888.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0336/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1338.0,667.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.067252,42.1311865]}},{"type":"Feature","properties":{"resourceCoords":[1338.0,1887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.065908,42.1291715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0337/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p337","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0337/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0337","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1313.5,51.3 1321.0,1896.9 641.4,1896.2 635.9,50.2 1313.5,51.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0337/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06863257131823,42.1320378415575]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06498661762343,42.1333841904561]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06286877921349,42.13018524486399]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06651473290829,42.12883889596539]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0338/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p338","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0338/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0338","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"310.5,0.0 1024.1,24.8 1441.8,1932.0 314.4,1933.9 310.5,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0338/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[313.0,1313.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0643401,42.1310005]}},{"type":"Feature","properties":{"resourceCoords":[313.0,689.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0650122,42.1320107]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0339/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p339","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0339/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0339","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1535.7,0.0 1553.7,1949.0 1553.2,1949.0 1440.5,1943.3 589.4,1949.0 137.0,0.0 1535.7,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0339/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06447497341563,42.13354606070154]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06084934915204,42.13485435991549]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0587913150453,42.13167332663037]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06241693930889,42.130365027416424]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0340__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p340 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6692.0"},{"label":"split_canvas_h","value":"5434.4"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0340__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0340","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1562.0,54.9 596.0,62.1 600.9,1302.5 1563.5,1305.6 1562.0,54.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0340__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1564.0,680.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0582926,42.1344667]}},{"type":"Feature","properties":{"resourceCoords":[1564.0,1305.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0576206,42.1334488]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0341/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p341","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0341/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0341","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1522.6 -0.0,300.0 1528.4,301.4 1529.9,766.7 1659.0,766.8 1659.0,1636.2 57.0,1636.9 57.4,1522.4 -0.0,1522.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0341/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1086.0,1200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0671731,42.1269035]}},{"type":"Feature","properties":{"resourceCoords":[1086.0,301.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0681428,42.1283484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0342/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p342","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0342/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0342","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.1,1633.8 128.8,766.4 -0.0,765.9 -0.0,301.6 1673.0,308.4 1673.0,1509.5 1091.6,1504.7 1152.8,1632.7 126.1,1633.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0342/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[587.0,768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0654032,42.1284252]}},{"type":"Feature","properties":{"resourceCoords":[587.0,304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.065908,42.1291715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0343/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p343","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0343/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0343","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1633.8 -0.0,-0.0 90.3,0.0 89.4,114.0 1567.4,118.7 1568.3,1880.0 85.0,1874.0 93.2,1634.3 -0.0,1633.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0343/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[85.0,1874.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0670221,42.1225398]}},{"type":"Feature","properties":{"resourceCoords":[1115.0,117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0667014,42.1262029]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0344/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p344","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0344/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0344","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1592.0,1885.1 1591.5,1949.0 557.3,1949.0 557.8,1881.0 -0.0,1878.7 -0.0,121.7 1139.5,122.1 1079.2,0.0 1673.0,0.0 1673.0,1885.4 1592.0,1885.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0344/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[570.0,124.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0644734,42.1270254]}},{"type":"Feature","properties":{"resourceCoords":[1592.0,1885.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0603197,42.1250113]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0345/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p345","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"9"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0345/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0345","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"306.5,53.5 840.9,53.8 847.1,78.5 1246.2,81.6 1247.2,1532.3 1354.7,1758.0 1311.4,1743.2 1432.6,1949.0 1004.7,1949.0 809.6,1636.9 766.2,1595.0 321.7,1591.5 306.5,53.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0345/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1421.0,1784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0549145,42.126222]}},{"type":"Feature","properties":{"resourceCoords":[279.0,284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0631679,42.1292488]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0346/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p346","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0346/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0346","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1502.2,1788.1 175.2,1778.8 290.5,1949.0 226.6,1949.0 -0.0,1532.7 -0.0,70.4 81.2,62.1 80.0,180.3 125.9,132.6 184.3,104.7 421.2,156.9 1673.0,171.6 1673.0,837.2 1501.6,836.4 1502.2,1788.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0346/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.059528885285,42.13168989415483]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0522858425727,42.13439822253412]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0480613091209,42.128096265909356]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0553043518332,42.12538793753007]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0347/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p347","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0347/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0347","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1668.0,1899.4 -0.0,1894.5 0.0,-0.0 1668.0,0.0 1668.0,1899.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0347/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[311.0,1895.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0484681,42.1285906]}},{"type":"Feature","properties":{"resourceCoords":[1335.0,1895.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0462258,42.1294185]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0348/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p348","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0348/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0348","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1896.0 -0.0,1078.8 502.1,1066.6 460.6,0.0 1292.7,0.0 1315.0,983.6 1673.0,947.1 1673.0,1844.8 -0.0,1896.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0348/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04765252514922,42.13105361643318]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04398586684181,42.13229572628908]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04204833634725,42.12910555723458]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04571499465466,42.12786344737868]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0349/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p349","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0349/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0349","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,-0.0 900.1,0.0 905.8,412.1 1668.0,401.0 1668.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0349/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[948.0,1434.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0422568,42.1319906]}},{"type":"Feature","properties":{"resourceCoords":[948.0,1904.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0417654,42.1312279]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0352/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p352","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0352/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0352","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1502.7 -0.0,184.4 83.5,183.8 78.8,0.0 1673.0,0.0 1673.0,1949.0 1566.7,1949.0 1557.4,1491.5 -0.0,1502.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0352/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03771854117562,42.13972339482551]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03034077227308,42.142334443566405]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02626747190584,42.13591606415062]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03364524080838,42.133305015409725]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0353/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p353","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0353/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0353","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"296.2,1643.0 303.6,315.7 406.7,317.1 410.4,0.0 1668.0,0.0 1668.0,1949.0 1626.2,1949.0 1627.7,1650.9 296.2,1643.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0353/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05292217025232,42.13410624961272]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04928945704522,42.13546764734412]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04714706122172,42.13231592458378]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05077977442882,42.13095452685238]}},{"type":"Feature","properties":{"resourceCoords":[682.0,321.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.051084,42.1341438]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0356/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p356","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0356/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0356","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,310.5 1673.0,321.8 1673.0,1949.0 -0.0,1949.0 -0.0,310.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0356/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04552763800292,42.13677992531408]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04187010569439,42.13812471585121]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03976016892646,42.13496094389863]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.043417701235,42.1336161533615]}},{"type":"Feature","properties":{"resourceCoords":[1557.0,321.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0417762,42.1375104]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0357/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p357","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0357/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0357","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1721.0 0.0,-0.0 300.2,0.0 293.5,236.6 1293.0,234.6 1292.5,1720.0 -0.0,1721.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0357/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[855.0,1722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0641615,42.1205623]}},{"type":"Feature","properties":{"resourceCoords":[284.0,730.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0665057,42.1217238]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0358/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p358","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0358/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0358","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"296.4,1734.8 298.8,227.6 1330.3,226.6 1328.0,1101.8 1002.0,1104.4 997.0,1735.0 296.4,1734.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0358/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[298.0,729.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0642791,42.122543]}},{"type":"Feature","properties":{"resourceCoords":[1329.0,729.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0620377,42.1233677]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0359/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p359","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0359/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0359","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1127.0 324.7,1121.8 320.4,318.7 1355.0,304.8 1362.4,1744.4 -0.0,1755.2 -0.0,1127.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0359/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1358.0,1266.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0592204,42.1233478]}},{"type":"Feature","properties":{"resourceCoords":[320.0,250.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0625767,42.1241789]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0360/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p360","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0360/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0360","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.2,252.1 1083.0,268.9 1519.7,962.6 1673.0,962.1 1673.0,1251.0 1098.5,1253.2 1093.5,1749.3 71.0,1752.0 75.2,252.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0360/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[71.0,1752.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0587012,42.1225738]}},{"type":"Feature","properties":{"resourceCoords":[71.0,252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0603197,42.1250113]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0361/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p361","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0361/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0361","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1668.0,223.6 1668.0,1732.8 -0.0,1733.2 20.4,221.4 1668.0,223.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0361/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[301.0,1229.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0643521,42.1184726]}},{"type":"Feature","properties":{"resourceCoords":[1331.0,727.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0626563,42.1201068]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0362/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p362","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0362/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0362","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"650.6,1949.0 644.9,220.9 1337.7,220.3 1336.1,1724.7 722.2,1726.0 722.7,1949.0 650.6,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0362/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[310.0,1225.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0621163,42.1192961]}},{"type":"Feature","properties":{"resourceCoords":[1337.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0604183,42.1209305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0363/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p363","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0363/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0363","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1312.0,235.0 1310.9,1731.7 280.8,1734.4 281.7,237.6 1312.0,235.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0363/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[281.0,1235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0598798,42.1201201]}},{"type":"Feature","properties":{"resourceCoords":[1312.0,235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0587012,42.1225738]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0364/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p364","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0364/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0364","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1321.2,230.1 1325.5,1949.0 308.0,1949.0 300.1,237.5 1321.2,230.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0364/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1322.0,734.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.055923,42.1225753]}},{"type":"Feature","properties":{"resourceCoords":[307.0,1734.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0570844,42.1201388]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0365/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p365","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0365/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0365","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 11.8,223.4 1666.4,221.8 1668.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0365/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[307.0,1265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0626825,42.1159641]}},{"type":"Feature","properties":{"resourceCoords":[1328.0,1265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0604453,42.1167874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367__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 | 1950 | sanborn07660_008 p367 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6672.0"},{"label":"split_canvas_h","value":"5152.8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1599.6,45.5 -0.0,45.8 0.0,729.9 229.3,832.7 525.9,831.6 536.6,1008.4 633.0,1063.6 1596.3,1063.9 1599.6,45.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[594.0,532.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0588008,42.1184962]}},{"type":"Feature","properties":{"resourceCoords":[1598.0,532.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0565453,42.1193268]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p367 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2919.6"},{"label":"split_canvas_w","value":"4144.8"},{"label":"split_canvas_h","value":"4876.4"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1036.1,1900.6 1035.1,1293.8 1025.4,1288.2 536.6,1008.4 525.9,831.6 229.3,832.7 0.0,729.9 -0.0,1887.3 1036.1,1900.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0367__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,729.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04050803651977,42.14030181162284]}},{"type":"Feature","properties":{"resourceCoords":[1036.2,729.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03824985497762,42.14114459080539]}},{"type":"Feature","properties":{"resourceCoords":[1036.2,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03691322015156,42.13917007765333]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03917140169371,42.138327298470784]}},{"type":"Feature","properties":{"resourceCoords":[58.0,1888.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0391129,42.1384728]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0368/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p368","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0368/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0368","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"323.3,1086.7 325.9,250.7 1351.5,258.7 1346.4,1293.2 1677.0,1292.8 1677.0,1639.5 1345.3,1639.2 1344.3,1949.0 -0.0,1949.0 -0.0,1086.7 323.3,1086.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0368/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[325.0,537.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0565453,42.1193268]}},{"type":"Feature","properties":{"resourceCoords":[1350.0,537.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0543179,42.1201469]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0369/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p369","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0369/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0369","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"285.7,1734.9 292.7,231.1 869.0,228.2 868.8,0.0 1355.1,0.0 1357.0,414.4 1368.6,414.9 1360.0,1733.0 285.7,1734.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0369/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[287.0,1235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.055923,42.1225753]}},{"type":"Feature","properties":{"resourceCoords":[1360.0,1733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0530441,42.1226226]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0370/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p370","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0370/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0370","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1374.6,190.2 1363.7,1949.0 283.4,1949.0 293.4,186.2 1374.6,190.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0370/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[288.0,1190.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0543179,42.1201469]}},{"type":"Feature","properties":{"resourceCoords":[1372.0,687.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0525139,42.1218226]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0371__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p371 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6652.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0371__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0371","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"540.1,0.0 542.6,381.3 59.2,384.2 59.4,445.3 543.0,444.2 552.0,1807.8 1663.0,1949.0 1663.0,47.1 540.1,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0371__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[735.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0549145,42.126222]}},{"type":"Feature","properties":{"resourceCoords":[1596.0,451.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.052592,42.1262554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0372/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p372","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0372/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0372","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1242.5,45.2 1247.2,1949.0 352.4,1949.0 365.6,49.1 1242.5,45.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0372/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1362.0,1256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.049418,42.1258238]}},{"type":"Feature","properties":{"resourceCoords":[295.0,457.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.052592,42.1262554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0373/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p373","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0373/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0373","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"289.6,0.0 1054.2,0.0 1190.8,125.2 1221.2,153.1 1450.3,363.1 1348.0,360.1 1344.3,1910.9 278.6,1904.2 289.6,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0373/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05405734936583,42.12297541492624]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05045481682346,42.12432211843299]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04834181777566,42.121168422761485]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05194435031804,42.11982171925473]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0374/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p374","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0374/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0374","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"389.8,362.9 155.9,154.7 1233.8,137.7 1214.8,1904.0 286.5,1900.0 288.3,360.1 389.8,362.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0374/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05176807669046,42.123836826627276]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04810749506434,42.12520096276311]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04598498343346,42.12202324528092]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04964556505958,42.12065910914509]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0375/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p375","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0375/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0375","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1663.0,1867.2 1663.0,1867.2 1663.0,1949.0 -0.0,1949.0 -0.0,40.6 1663.0,50.3 1663.0,1867.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0375/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[164.0,1648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0488816,42.1252198]}},{"type":"Feature","properties":{"resourceCoords":[1481.0,860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0468789,42.1275488]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0376/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p376","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0376/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0376","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,138.1 1670.5,131.8 1677.0,1780.4 1461.8,1889.6 -0.0,1921.9 -0.0,138.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0376/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04907068666158,42.12484010539883]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04542651769013,42.12616170867422]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0433701539037,42.122998286036285]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04701432287514,42.1216766827609]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0377/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p377","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"21"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0377/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0377","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"409.6,66.4 590.0,65.4 576.5,472.9 1009.5,473.0 992.5,1920.0 836.8,1822.2 475.0,1820.1 414.1,1842.0 409.6,66.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0377/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[672.0,270.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0457877,42.1287562]}},{"type":"Feature","properties":{"resourceCoords":[155.0,270.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0480365,42.1279373]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0378/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p378","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"23"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0378/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0378","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"404.9,39.0 1056.3,38.3 1056.2,0.0 1439.6,0.0 1438.5,952.3 1233.2,954.1 1233.3,978.9 1438.5,977.8 1439.1,1690.0 1677.0,1691.1 1677.0,1949.0 335.4,1949.0 46.4,1940.8 -0.0,1912.5 -0.0,475.6 395.6,468.6 404.9,39.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0378/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[270.0,276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0431108,42.1297104]}},{"type":"Feature","properties":{"resourceCoords":[945.0,1194.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0382041,42.1277582]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0379/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p379","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0379/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0379","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"206.6,1207.9 -0.0,1207.5 -0.0,1182.7 206.6,1182.3 209.3,227.9 -0.0,226.4 0.0,-0.0 1663.0,0.0 1663.0,1941.3 1452.8,1940.8 1452.9,1949.0 445.4,1949.0 445.5,1924.5 206.1,1921.7 206.6,1207.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0379/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03992621163229,42.13284998343324]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03266561288372,42.13546285252501]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0285654039419,42.129107739492035]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03582600269047,42.126494870400265]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0380/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p380","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0380/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0380","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1677.0,1949.0 395.9,1949.0 390.9,4.1 1523.2,0.0 1530.8,461.6 1638.0,462.0 1639.8,0.0 1677.0,0.0 1677.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0380/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03437983060392,42.13486644580099]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02706224756095,42.137482366522626]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02299139088234,42.131131046760046]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03030897392532,42.12851512603841]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p381","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,-0.0 1663.0,0.0 1663.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07284959338143,42.112669576655826]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06914775488944,42.11397657831617]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06709738353133,42.11073541989097]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07079922202333,42.10942841823063]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p381A","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381A","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"189.1,1742.7 221.7,36.3 -0.0,33.3 -0.0,-0.0 1677.0,0.0 1677.0,43.7 1076.5,40.7 1058.6,1739.3 189.1,1742.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[874.0,1740.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0658146,42.1116858]}},{"type":"Feature","properties":{"resourceCoords":[874.0,226.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0674816,42.114195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381B/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p381B","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381B/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381B","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,376.5 1424.2,408.2 1422.6,1699.1 1179.3,1697.2 1178.2,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381B/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.07101320178907,42.11012416656161]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06732953871465,42.11150032686077]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06516816079788,42.10827106971803]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06885182387231,42.10689490941887]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381C/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p381C","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381C/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381C","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,442.6 132.5,444.6 137.2,218.5 988.3,216.6 967.1,1949.0 -0.0,1949.0 -0.0,442.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381C/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[806.0,1189.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0647212,42.11004]}},{"type":"Feature","properties":{"resourceCoords":[806.0,705.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0652675,42.1108588]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381D/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p381D","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381D/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381D","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"19.3,0.0 20.6,407.3 668.1,401.4 668.3,262.4 802.0,262.3 802.3,398.2 1347.0,397.1 1345.0,601.5 1661.0,602.9 1661.0,1949.0 -0.0,1949.0 -0.0,-0.0 19.3,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0381D/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[668.0,525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.065993,42.1074993]}},{"type":"Feature","properties":{"resourceCoords":[668.0,253.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0665359,42.1083172]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0382/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p382","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0382/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0382","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"839.8,0.0 845.5,427.6 1677.0,421.3 1677.0,1949.0 -0.0,1949.0 0.0,-0.0 839.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0382/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06723322741817,42.11466757047273]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0598666059427,42.11732670546947]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05572981692899,42.11093078695371]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06309643840446,42.10827165195697]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0383/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p383","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0383/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0383","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"60.3,1914.2 48.1,365.8 161.8,365.3 214.2,365.1 212.3,192.3 586.0,189.8 585.5,87.9 1650.9,82.2 1661.0,1949.0 -0.0,1949.0 -0.0,1915.0 60.3,1914.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0383/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05412322852881,42.11947950269971]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0468948102604,42.12210659585376]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04276818602892,42.115770696981414]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04999660429733,42.11314360382737]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0384/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p384","metadata":[{"label":"streets","value":"17"},{"label":"intersections","value":"30"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0384/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0384","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"225.7,94.2 878.5,76.0 1043.7,0.0 1406.7,0.0 1677.0,174.8 1677.0,1949.0 -0.0,1949.0 -0.0,1934.6 234.8,1933.4 225.7,94.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0384/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[901.0,615.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0426411,42.1211827]}},{"type":"Feature","properties":{"resourceCoords":[507.0,1439.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.042621,42.1178359]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0385/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p385","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0385/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0385","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"194.6,1949.0 222.2,0.0 258.3,0.0 258.1,120.2 920.4,125.5 919.6,554.0 1590.5,559.1 1583.8,1949.0 194.6,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0385/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.06092422267704,42.11708914473773]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05370663427972,42.11979769013687]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04945989338637,42.11348245535259]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0566774817837,42.11077390995345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0398/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p398","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0398/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0398","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.5,1820.0 110.3,1766.0 -0.0,1767.3 -0.0,-0.0 1677.0,0.0 1677.0,1071.2 1578.1,1045.5 1587.2,1910.8 1604.8,1910.6 1605.3,1949.0 1566.5,1949.0 1533.9,1781.7 960.6,1790.0 962.0,1885.3 614.7,1889.8 615.4,1815.5 111.5,1820.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0398/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[489.0,1815.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0746015,42.1370291]}},{"type":"Feature","properties":{"resourceCoords":[489.0,1525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.075226,42.1379913]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p399","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,0.0 1664.0,0.0 1664.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.05036682744421,42.14920933153507]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04311659055922,42.15179426325164]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03906161262415,42.145453671219244]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.04631184950914,42.142868739502674]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p399A","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399A","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,760.9 -0.0,148.0 1551.9,163.3 1554.4,0.0 1677.0,0.0 1677.0,1727.0 1174.0,1720.7 1171.1,1315.5 648.2,1319.8 652.4,1904.8 1091.0,1906.8 1090.2,1949.0 127.3,1949.0 127.2,1902.5 68.7,1902.2 77.3,1182.5 79.8,1145.2 93.1,1145.2 100.2,762.2 -0.0,760.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[84.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0454903,42.1432206]}},{"type":"Feature","properties":{"resourceCoords":[685.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0428839,42.1441734]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399B/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p399B","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399B/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399B","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1570.8,1615.6 666.8,1588.5 665.6,1626.0 -0.0,1603.5 -0.0,-0.0 881.1,-0.0 880.5,145.1 1600.3,147.8 1570.8,1615.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399B/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02175832516937,42.14221319054066]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01809893201906,42.136917226220596]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02640547627756,42.13371648345714]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.03006486942787,42.139012447777205]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399C/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p399C","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399C/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399C","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1131.0,1608.8 90.8,1597.9 91.7,159.3 1664.9,121.9 1660.8,-0.0 1677.0,-0.0 1677.0,1949.0 1127.5,1949.0 1131.0,1608.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0399C/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01836748350347,42.13743489875033]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0147467223597,42.13193412631259]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02330696303932,42.128791482705246]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02692772418308,42.13429225514298]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0453__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 | 1950 | sanborn07660_008 p453 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3531.6"},{"label":"split_canvas_w","value":"6676.0"},{"label":"split_canvas_h","value":"4264.4"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0453__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0453","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"325.0,1949.0 613.0,1949.0 1669.0,1949.0 1669.0,1010.3 111.2,937.1 34.5,936.9 -0.0,935.0 -0.0,1949.0 325.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0453__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[671.0,1436.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0144593,42.1331671]}},{"type":"Feature","properties":{"resourceCoords":[671.0,964.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0150049,42.1339201]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454__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 | 1950 | sanborn07660_008 p454 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6740.0"},{"label":"split_canvas_h","value":"2253.6"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454","type":"ImageService3","width":1685,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 0.0,563.4 1150.7,562.9 1685.0,562.7 1685.0,0.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01976861800846,42.14285712828969]}},{"type":"Feature","properties":{"resourceCoords":[1685.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01604869452774,42.14415594089732]}},{"type":"Feature","properties":{"resourceCoords":[1685.0,563.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0154642357534,42.14323306437359]}},{"type":"Feature","properties":{"resourceCoords":[0.0,563.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01918415923411,42.14193425176596]}},{"type":"Feature","properties":{"resourceCoords":[872.0,313.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0175186,42.1430162]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p454 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2251.6"},{"label":"split_canvas_w","value":"6740.0"},{"label":"split_canvas_h","value":"5544.4"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454","type":"ImageService3","width":1685,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1685.0,1870.6 1685.0,941.3 1151.8,942.2 1150.7,562.9 0.0,563.4 -0.0,1476.2 98.1,1483.2 95.8,1898.5 1685.0,1870.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0454__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[561.0,1895.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0126204,42.141501]}},{"type":"Feature","properties":{"resourceCoords":[561.0,634.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0142587,42.1434254]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0455/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p455","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0455/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0455","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1925.4 -0.0,-0.0 1669.0,0.0 1669.0,1949.0 1499.6,1949.0 1496.6,1905.1 -0.0,1925.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0455/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02044025281786,42.139172506630196]}},{"type":"Feature","properties":{"resourceCoords":[1669.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0168261031785,42.1405520304239]}},{"type":"Feature","properties":{"resourceCoords":[1669.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01466883643788,42.13740034776226]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01828298607724,42.13602082396856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0456/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p456","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0456/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0456","type":"ImageService3","width":1685,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1492.2,0.0 1631.9,1800.6 185.2,1808.8 224.4,25.5 1492.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0456/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[562.0,482.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0155647,42.140109]}},{"type":"Feature","properties":{"resourceCoords":[386.0,939.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0154161,42.1392236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0457/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p457","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0457/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0457","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1615.6,1849.7 -0.0,1785.0 -0.0,125.1 1517.2,123.1 1615.6,1849.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0457/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01847519271766,42.1362493317196]}},{"type":"Feature","properties":{"resourceCoords":[1669.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01490466881565,42.1376530771466]}},{"type":"Feature","properties":{"resourceCoords":[1669.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.012709626147,42.134539294189274]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01628015004901,42.13313554876227]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0458/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p458","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0458/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0458","type":"ImageService3","width":1685,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"140.7,1824.3 87.8,149.6 257.1,155.9 233.1,107.6 258.9,107.9 262.9,0.0 1685.0,0.0 1685.0,1949.0 197.0,1949.0 198.7,1826.7 140.7,1824.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0458/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01539946982676,42.137419622535816]}},{"type":"Feature","properties":{"resourceCoords":[1685.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01182345919365,42.13891301793836]}},{"type":"Feature","properties":{"resourceCoords":[1685.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.00951035879807,42.135824123999974]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01308636943118,42.13433072859743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0459/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p459","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0459/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0459","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1452.0 55.8,1451.1 50.0,40.3 1669.0,20.2 1669.0,1949.0 -0.0,1949.0 -0.0,1452.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0459/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[975.0,1068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0103351,42.1403844]}},{"type":"Feature","properties":{"resourceCoords":[975.0,604.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0109427,42.1410898]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0471/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p471","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0471/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0471","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1510.5,532.1 1669.0,463.9 1669.0,854.8 1523.8,863.7 1508.1,1180.7 1358.3,1073.5 1358.0,1108.0 1472.5,1188.3 1529.5,1195.0 1669.0,1294.1 1669.0,1328.0 1513.8,1217.9 1506.1,1856.9 587.5,1847.0 587.0,1949.0 -0.0,1949.0 -0.0,-0.0 1669.0,0.0 1669.0,16.0 1511.8,68.5 1510.5,532.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0471/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02551716685771,42.154222371314916]}},{"type":"Feature","properties":{"resourceCoords":[1669.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01827404236683,42.1567811487931]}},{"type":"Feature","properties":{"resourceCoords":[1669.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01427180277435,42.150466250065975]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.02151492726523,42.14790747258779]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0472/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p472","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"18"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0472/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0472","type":"ImageService3","width":1685,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"308.9,1287.5 161.5,1185.5 113.8,1185.3 -0.0,1107.2 -0.0,1072.9 148.9,1177.3 161.7,862.3 305.1,851.4 301.8,463.3 145.7,533.3 143.0,73.0 297.9,18.7 297.8,2.8 1685.0,0.0 1685.0,1949.0 956.6,1949.0 956.2,1753.0 861.4,1687.0 153.3,1692.2 154.8,1214.1 309.2,1321.2 308.9,1287.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0472/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[387.0,1358.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0151286,42.1524749]}},{"type":"Feature","properties":{"resourceCoords":[143.0,73.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0188157,42.1563184]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473__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 | 1950 | sanborn07660_008 p473 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5250.0"},{"label":"split_canvas_w","value":"2011.6"},{"label":"split_canvas_h","value":"2546.0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"192.0,1949.0 458.6,1949.0 459.4,1364.5 0.0,1364.5 0.0,1793.5 -0.0,1949.0 192.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[80.0,1364.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0190059,42.1491965]}},{"type":"Feature","properties":{"resourceCoords":[459.9,1364.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0182081,42.1494707]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p473 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6676.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1312.5 501.6,1314.4 502.9,1949.0 513.5,1949.0 518.1,1503.9 721.8,1506.0 763.8,1602.3 1578.0,1600.0 1578.9,285.0 209.9,292.9 212.6,895.4 166.6,847.4 -0.0,848.4 0.0,1312.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0473__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[666.0,290.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0171954,42.149819]}},{"type":"Feature","properties":{"resourceCoords":[1578.0,1600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0138339,42.1483434]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0474/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p474","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0474/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0474","type":"ImageService3","width":1690,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1502.0,0.0 1690.0,131.7 1690.0,1528.4 1018.2,1523.6 1017.8,1624.5 86.5,1617.9 95.1,0.0 1502.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0474/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01569392469698,42.150954858264946]}},{"type":"Feature","properties":{"resourceCoords":[1690.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.01194712604547,42.152255839570365]}},{"type":"Feature","properties":{"resourceCoords":[1690.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.0099375925425,42.149029675656685]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.013684391194,42.147728694351265]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0475/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p475","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0475/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0475","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,-0.0 205.6,0.0 249.1,96.8 1542.6,79.8 1550.7,714.5 1444.3,715.8 1460.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0475/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1077.0,720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0131968,42.1473061]}},{"type":"Feature","properties":{"resourceCoords":[611.0,92.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0148471,42.1479981]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0476/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Erie, Pennsylvania | 1950 | sanborn07660_008 p476","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T12:08:48Z","modified":"2026-09-21T12:08:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0476/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0476","type":"ImageService3","width":1690,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1690.0,1949.0 -0.0,1949.0 -0.0,726.9 105.0,727.0 105.0,101.0 567.2,101.0 567.5,0.0 1690.0,0.0 1690.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824em:g3824em_g07660195003:07660_03_1950-0476/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[105.0,727.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0121524,42.1476605]}},{"type":"Feature","properties":{"resourceCoords":[105.0,101.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.0127947,42.1486975]}}]}}]}