![West side, Triumph Hill, 50 derricks. West side, Triumph Hill, 50 derricks.](https://cache.getarchive.net/Prod/thumb/cdn6/L3Bob3RvLzE5MDAvMTIvMzEvd2VzdC1zaWRlLXRyaXVtcGgtaGlsbC01MC1kZXJyaWNrcy1mNDk5NTEtNjQwLmpwZw%3D%3D/320/186/jpg 320w, https://cdn6.picryl.com/photo/1900/12/31/west-side-triumph-hill-50-derricks-f49951-640.jpg 640w, https://cache.getarchive.net/Prod/thumb/cdn6/L3Bob3RvLzE5MDAvMTIvMzEvd2VzdC1zaWRlLXRyaXVtcGgtaGlsbC01MC1kZXJyaWNrcy1mNDk5NTEtNjQwLmpwZw%3D%3D/960/559/jpg 960w, https://cache.getarchive.net/Prod/thumb/cdn6/L3Bob3RvLzE5MDAvMTIvMzEvd2VzdC1zaWRlLXRyaXVtcGgtaGlsbC01MC1kZXJyaWNrcy1mNDk5NTEtNjQwLmpwZw%3D%3D/1024/596/jpg 1024w)
West side, Triumph Hill, 50 derricks.
Summary
Pennsylvania stereoscopic card.
Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who assembled it over a period of more than six decades, Robert N. Dennis (1900-1983).
Stereographs consist of two nearly identical photographs or photomechanical prints, paired to produce the illusion of a single three-dimensional image, usually when viewed through a stereoscope. Stereographs were produced from the 1850s to the 1940s, with the bulk between 1870 and 1920.
Tags
Date
1858 - 1900
Contributors
Robbins, Frank (1846-), Photographer
Source
New York Public Library
Copyright info
Creative Commons CC0 1.0 Universal Public Domain Dedication ("CCO 1.0 Dedication")