Calistoga Springs, Grotto of Petrified Wood.

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 resorts calistoga calif petrified wood architectural follies the miriam and ira d wallach division of art prints and photographs photography collection calistoga springs muybridge eadweard 1830 1904 photographer stereoscopic views calistoga springs grotto petrified wood united states sonoma county napa county lake county robert dennis collection of stereoscopic views 19th century ultra high resolution high resolution early photography eadweard j muybridge new york public library back of stereoscopic card vintage ads

1872 - 1874

New York Public Library

https://digitalcollections.nypl.org/

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