archive.org/web/20161102094539/http://www.panoramio.com/user/143517?with_photo_id=129238435 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161102014933/http://www.panoramio.com/user/143517?with_photo_id=129042160 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161031025423/http://www.panoramio.com/user/143517?with_photo_id=129669411 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161010172252/http://www.panoramio.com/user/1088526?with_photo_id=8080574 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030233257/http://www.panoramio.com/photo/129669367 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/20161031141052/http://www.panoramio.com/user/143517?with_photo_id=129669501 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161016205558/http://www.panoramio.com/user/3871104?with_photo_id=42562933 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161028095849/http://www.panoramio.com/user/1158838?with_photo_id=107128484 operator: Panoramio described at URL: https://web.archive...
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