[Washington Headquarters, Newburgh, N.Y.] New York Sterecope Card.
Summary
Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description
Tags
Date
1860 - 1889
Source
New York Public Library
Copyright info
Creative Commons CC0 1.0 Universal Public Domain Dedication ("CCO 1.0 Dedication")