English: Black and white carte de visite of a black man dressed in a Union Army Sergeant uniform with sergeant stripes, long straight sword hung from belt, and left hand holding a copy of a book entitled "The Great Rebellion," by Joel Tyler Headley. 10 cm x 7 cm. Photograph by J. Oldershaw, northeast corner of High and Asylum Streets, Hartford, Connecticut. Courtesy of the Yale Collection of American Literature, Beinecke Rare Book and Manuscript Library, Yale University, New Haven, Connecticut.