archive.org/web/20161026215125/http://www.panoramio.com/user/5244559?with_photo_id=86832187 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161020052253/http://www.panoramio.com/user/3451733?with_photo_id=68546130 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161031173636/http://www.panoramio.com/user/143517?with_photo_id=129042144 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161101144704/http://www.panoramio.com/user/143517?with_photo_id=129669391 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161012000205/http://www.panoramio.com/user/1088526?with_photo_id=8080516 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161031064225/http://www.panoramio.com/user/143517?with_photo_id=129669384 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030154606/http://www.panoramio.com/photo/129669374 determination method...
Falls of the Schuylkill location. The area: "Industrial activity marked the early history of the Schuylkill River and nearby waterways. Even before the fishery...
panoramio.com/user/164173?with_photo_id=2132639 operator: Panoramio described at URL: https://web.archive.org/web/20161010131628/http://www.panoramio...
archive.org/web/20161102183023/http://www.panoramio.com/user/143517?with_photo_id=129669483 operator: Panoramio described at URL: https://web.archive...
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