When the Fight Was Done, A Novel of the Maratha Wars. New Delhi: Penguin Books-India, 2002
Mark Twain's Burlesque Patterns. Dallas: Southern Methodist University Press, 1960.
The Pattern for Mark Twain's Roughing It. Berkeley: University of California Press, 1961.
Painting and Poetry: Form, Metaphor, and the Language of Literature. With Mary Ann Rogers. Lewisburg: Bucknell University Press, 1985.
Occidental Ideographs: Image, Sequence, and Literary History (a companion volume to the above). With Mary Ann Rogers. Lewisburg: Bucknell University Press, 1991.
Blood Feud in Paradise, The Course of Conflict in Kashmir. San Jose: English Department, San Jose State University, 2002.
Simon Wheeler, Detective by Mark Twain. New York: The New York Public Library, 1963.
Mark Twain's Satires & Burlesques. (Volume I, The Mark Twain Papers) Berkeley: University of California Press; London: Cambridge University Press, 1967.
Roughing It. (Volume II, The Works of Mark Twain). Berkeley: University of California Press; London: Cambridge University Press, 1972. A definitive edition prepared for the Center for Editions of American Authors (Modern Language Association).