Gregg Camfield, professor of English at the University of the Pacific, has published numerous articles and books on American literature generally and on Mark Twain in particular. Among them are Sentimental Twain: Samuel Clemens in the Maze of Moral Philosophy (U of Pennsylvania P, 1994); Necessary Madness: The Humor Domesticity in Nineteenth-Century American Literature (Oxford UP, 1997); and The Oxford Companion to Mark Twain (2003). He has contributed to The Oxford Historical Guide to Mark Twain, ed. Shelly Fisher Fishkin (2002) and to A Companion to American Literature, ed. Robert Paul Lamb and G.R. Thompson (Blackwell, 2005). He is currently writing an advice book for students, How to Thrive, Not Just Survive, in College. Camfield is working with the Mark Twain Project and is a member of the Board of Editors for Studies in American Humor.