Government Conservatory, Washington, D.C. United States Botanic Garden, Washington DC

Washington DC 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.

united states botanic garden botanical gardens washington d c greenhouses the miriam and ira d wallach division of art prints and photographs photography collection government conservatory high resolution washington dc stereoscopic views government conservatory united states building greenhouse green house robert dennis collection of stereoscopic views 19th century gardens new york public library

1865

New York Public Library

http://digitalcollections.nypl.org/

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