Sudbury River Conduit, B.W.W., div. 4, sec. 17, Nov. 13, 1876. View near rock-cut on sec. 17 showing ledgemen in the foreground and brickmasons in the background.

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 quarrying pipes conduits bricklayers sec sudbury river conduit stereoscopic views sudbury river conduit nov view rock cut ledgemen foreground brickmasons background united states boston water works water works boston robert dennis collection of stereoscopic views 19th century history of boston ultra high resolution high resolution new york public library

1876 - 1876

New York Public Library

https://digitalcollections.nypl.org/

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