Boston Water works, Sudbury River Conduit, Nov. 6, 1876, south end of wooden dam on Sudbury River showing R.R. bridge and small bridge used for taking experiments with current water.

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 dams windmills covered bridges sudbury river conduit bridge boston water works sudbury river water barritt w h william henry 1848 1920 photographer stereoscopic views boston works sudbury river conduit nov dam experiments united states water works robert dennis collection of stereoscopic views 19th century history of boston ultra high resolution high resolution windmill nypl

1876 - 1876

New York Public Library

https://digitalcollections.nypl.org/

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