KRUH, Louis. American, b. 1923. Genres: History. Career: Began career as sales representative for weekly newspapers and a trade magazine; Batten, Barton, Durstine & Osborn Inc., NYC, marketing supervisor to senior account executive, 1954-70; New York Telephone, director of advertising, 1970-90; attorney in private practice, 1990-. Lecturer at colleges and universities, and to community and school groups. Publications: The Family Guide to Long Island, 1970, rev. ed. as The New Family Guide to Long Island, 1976; (co-author) Machine Cryptography and Modern Cryptanalysis, 1985; (co-ed.) Cryptology: Yesterday, Today, and Tomorrow, 1987; (co-ed.) Cryptology: Machines, History, and Methods, 1989; (with D.S. Kruh) Presidential Landmarks, 1992. Address: 17 Alfred Rd W, Merrick, NY 11566, U.S.A.