Union general (1803–1862) who commanded the XII Corps at the battle of Antietam, where, seeing his raw recruits waver, he rode into the fray where the action was the hottest. Mansfield was shot down and died from his wounds the next day. Original carte-de-visite portrait, 2.5 x 4.25, by the Union Photographic Gallery, signed below the image in black ink, “Jos. K. F. Mansfield.” In very good condition, with light scattered soiling, slight silvering, and clipped corners. RRAuction COA.