Interior section of the Chicago Lake tunnel.

Chicago Illinois 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.

illinois water supply chicago ill hydraulic facilities chicago tunnels the miriam and ira d wallach division of art prints and photographs photography collection chicago lake tunnel interior section ultra high resolution high resolution carbutt john 1832 1905 photographer stereoscopic views interior section lake tunnel united states robert dennis collection of stereoscopic views 19th century new york public library

1858 - 1900

New York Public Library

http://digitalcollections.nypl.org/

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