American author (1832–1899) best known for his popular Victorian “rags to riches” dime novels. Cabinet photo, 4 x 6.5, signed and inscribed in ink on the reverse, “Harold Hobson from his friend Horatio Alger, Jr.” Accompanied by a letter of authenticity from Ralph D. Gardner, author of Horatio Alger, or the American Hero Era. Light soiling and a few faint stains to image, light soiling to signed side, and slight trimming to one edge, otherwise fine condition. R&R COA.