From the public domain images of artworks in the Metropolitan Museum of Art collection -
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Title: [Barges, Transports, and Horses, White House Landing, Pamunkey River, Virginia]
Artist: Attributed to Timothy H. O'Sullivan (American, born Ireland, 1840-1882)
Former Attribution: Formerly attributed to Mathew B. Brady (American, born Ireland, 1823?-1896 New York)
Date: 1861-65
Medium: Albumen silver print from glass negative