El Capitan, from the foot of the Valley, Yosemite Valley, Mariposa County, Cal.

California 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.

california yosemite valley calif yosemite national park calif mountains rivers national parks and reserves the miriam and ira d wallach division of art prints and photographs photography collection yosemite valley el capitan mariposa county high resolution watkins carleton e 1829 1916 photographer stereoscopic views capitan foot yosemite mariposa united states robert dennis collection of stereoscopic views 19th century carleton watkins yosemite new york public library

1878 - 1880

New York Public Library

http://digitalcollections.nypl.org/

Creative Commons CC0 1.0 Universal Public Domain Dedication ("CCO 1.0 Dedication")