Union officer (1826–1911) who led an 1863 expedition through Confederate territory that severed lines of communication. Original 2.25 x 4 carte-de-visite photo by Gardner’s of Washington, D. C., signed below the image in black ink, “yours truly, B. H. Grierson, M.G.V.” In fine condition, with a revenue stamp affixed to reverse. RR Auction COA.