[Union Signal Corp Reconnoitering Confederate Positions from the Eastern Slope of Cedar Mountain, South of the Rapidan River, Virginia]
Object type: Photograph
Department: Photographs
Artist: Timothy H. O'Sullivan|Mathew B. Brady
Artist bio: American, born Ireland, 1840–1882|American, born Ireland, 1823?–1896 New York
Artist role: Artist|Former Attribution
Artist nationality: American, born Ireland|American, born Ireland
Date: March 1864
Medium: Albumen silver print from glass negative
Dimensions: 13.3 x 20.7 cm (5 1/4 x 8 1/8 in. )
Classification: Photographs
Credit line: Harris Brisbane Dick Fund, 1933
Accession year: 1933