Union general (1818–1885) best remembered for leading the losing Union forces in the First Battle of Bull Run. Later he was in charge of the army which defended Washington. Civil War-dated original 2.25 x 4 carte-de-visite bust portrait of McDowell in uniform, by an anonymous studio, signed in the lower border in black ink, “Irvin McDowell, Maj. Genl.” Reverse is also signed and inscribed in black ink, “To S. P. Gilbert Esq, with the compliments and thanks of Genl McDowell, Oct. 7, 1863.” Light scattered surface marks and soiling, light silvering to dark areas of the image, and trimmed edges, otherwise fine condition. RR Auction COA.