The complete photo is at the Library of Congress Online, and is part of their Civil War Photograph collection.
TITLE/LABEL Richmond, Va., vicinity. 20-pdr guns of the 1st New York Battery, unlimbered
PHOTOGRAPHER Gibson, James F. (b. 1828).
CREATED/PUBLISHED 1862 June.
MEDIUM 1 negative : glass, wet collodion.
REPOSITORY Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA
CALL NUMBER LC-B815- 0640
REPRODUCTION NUMBER LC-DIG-cwpb-00291 DLC (b&w copy scan)
LC-B8171-0640 DLC (b&w film neg.)
COLLECTION Selected Civil War photographs, 1861-1865 (Library of Congress)
DIGITAL ID (b&w copy scan) cwpb 00291
http://hdl.loc.gov/loc.pnp/cwpb.00291
(intermediary roll film) cwp 4a39553
NOTES Civil War photographs, 1861-1865 compiled by Hirst D. Milhollen and Donald H. Mugridge, Washington, D.C. Library of Congress, 1977. No. 0084.
Photograph from the main eastern theater of war, the Peninsular Campaign, May-August 1862.