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Steam stops and safety valves. Philadelphia PA. 19th century stereoscope card.

description

Summary

Philadelphia 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.

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Tags

pennsylvania philadelphia pa safety valves high resolution le van w barnet william barnet 1829 associated name stereoscopic views steam safety valves united states robert dennis collection of stereoscopic views 19th century history of pennsylvania new york public library
date_range

Date

1858 - 1900
person

Contributors

Le Van, W. Barnet (William Barnet) (b.1829), Associated name
place

Location

Philadelphia, Pa.
create

Source

New York Public Library
link

Link

http://digitalcollections.nypl.org/
copyright

Copyright info

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

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Topics

pennsylvania philadelphia pa safety valves high resolution le van w barnet william barnet 1829 associated name stereoscopic views steam safety valves united states robert dennis collection of stereoscopic views 19th century history of pennsylvania new york public library