DON L. F. NILSEN is Professor of English Linguistics at Arizona State University and Executive Secretary of the International Society for Humor Studies. His previous books include Humor Scholarship: A Research Bibliography (1993), Humor in Irish Literature: A Reference Guide (1996), Humor in British Literature, From the Middle Ages to the Restoration: A Reference Guide (1997), and Humor in Eighteenth- and Nineteenth-Century British Literature: A Reference Guide (1998), all available from Greenwood Press.