[View of the Washington monument, including constuction scene showing scaffolding.]

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.

monuments memorials washington d c washington monument washington d c construction the miriam and ira d wallach division of art prints and photographs photography collection washington monument constuction scene high resolution mills robert 1781 1855 architect monuments and memorials washington monument washington dc washington dc stereoscopic views view monument constuction scene united states robert dennis collection of stereoscopic views 19th century new york public library

1860

New York Public Library

http://digitalcollections.nypl.org/

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