G.W. Pach 1871-1877 [Untitled] [Scenes at West Point, N. Y.]
Stereocard Private collection of Graham Pilecki 1871-1877, 858 Broadway (Gustavus W. alone) - New York Historical Society Museum & Library
http://dlib.nyu.edu/findingaids/html/nyhs/pach/bioghist.html
