Summit House, frost two feet high.

New Hampshire 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.

new hampshire washington mount n h winter frost two feet summit house clough kimball photographer washington mount nh stereoscopic views summit house frost united states robert dennis collection of stereoscopic views 19th century ultra high resolution high resolution new york public library back of stereoscopic card

1871 - 1871

New York Public Library

https://digitalcollections.nypl.org/

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