[AMERICAN AUTHORS]. ALGER, Horatio (1832-1899). Autograph letter signed ("Horatio Alger Jr."), to Henry Parch, New York, 7 April 1893. 1 page, 8vo. Alger sends his signature. -- LONGFELLOW, Henry Wadsworth (1807-1882). Autograph letter signed ("Henry W. Longfellow"), to Mr. Williams, Newport, 9 July 1855. 2 1/4 pages, 8vo, bifolium, a few pale stains. Longfellow writes to see if his Illustrated Papers by the "American" have been sent yet. -- STOWE, Harriet Beecher (1811-1896). Autograph letter signed ("H.B. Stowe"), to Mr. Mason, Hartford, Connecticut, 27 October 1881. 2 pages, 8vo, remnants from old glue on verso. Stowe writes a Thanksgiving story. "I am writing a short story in response to your request for another Sam Lawson." -- Together, 3 manuscripts.