Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of engineer's office at Newton Upper Falls, Mass.

Boston Massachusetts 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.

massachusetts sudbury river mass hydraulic facilities interiors engineers newton upper falls mass sudbury river conduit newton upper falls engineer s office stereoscopic views sudbury river conduit nov view engineer office newton upper falls mass united states boston water works water works boston robert dennis collection of stereoscopic views history of boston ultra high resolution high resolution new york public library

1850 - 1930

New York Public Library

https://digitalcollections.nypl.org/

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