Basaltic Rocks, Lower Canyon of the Truckee.

Nevada 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.

sierra nevada calif and nev central pacific railroad company canyons railroad tracks volcanic rock basaltic rocks high resolution hart alfred a 1816 1908 photographer stereoscopic views basaltic rocks canyon truckee railroads robert dennis collection of stereoscopic views 19th century new york public library

1858 - 1900

New York Public Library

http://digitalcollections.nypl.org/

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