Boston water works, Sudbury River Conduit, 1876, Division III, west siphon chamber, showing 48" pipes for siphon.

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 pipes conduits boston water works sudbury river conduit division iii high resolution barritt w h william henry 1848 1920 photographer stereoscopic views boston water works sudbury river conduit division chamber pipes united states water works robert dennis collection of stereoscopic views 19th century history of boston industrial history new york public library

1876

New York Public Library

http://digitalcollections.nypl.org/

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