Artecemia Geyser Spring, U.G.B. Wyoming stereoscope card, 19th century.

Wyoming 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.

wyoming yellowstone national park national parks reserves geysers springs artecemia geyser webster albee photographer national parks and reserves stereoscopic views artecemia geyser united states yellowstone robert dennis collection of stereoscopic views 19th century images of yellowstone national park ultra high resolution high resolution nature national park new york public library

1886 - 1910

New York Public Library

https://digitalcollections.nypl.org/

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