Unidentified photographer 1864, July [Washington. D.C., vicinity. Maj. Gen. Alexander M. McCook on horseback, Brightwood]
Digital file, from intermediary roll copy film Library of Congress, Prints and Photographs Division Call Number/Physical Location: LC-B817- 7204 [P&P] LOT 4191 (corresponding photographic print), Digital Id: cwpb 03862 https://hdl.loc.gov/loc.pnp/cwpb.03862, cwp 4a40035 https://hdl.loc.gov/loc.pnp/cwp.4a40035, Control Number: 2018667065, Reproduction Number: LC-DIG-cwpb-03862 (digital file from original neg.) LC-B8171-7204 (b&w film neg.)