American forger (1887-1950?) who forged letters from American luminaries. Joseph Cosey forgery of a manuscript document signed “A. Lincoln,” two pages, 8.5 x 13.25, June 15, 1851. A forged petition for mandamus presented to the Supreme Court of Illinois by the law firm of William Herndon and Abraham Lincoln. In very good to fine condition, with chipping to the edges, and partially repaired fold splits and separations.