Mark Twain-Howells Letters: The Correspondence of Samuel L. Clemens and William D. Howells, 1872-1910

Howells, William Dean and Mark Twain. Mark Twain-Howells Letters: The Correspondence of Samuel L. Clemens and William D. Howells, 1872-1910. Eds. enry Nash Smith and William Merriam Gibson. Cambridge: Belknap Press of Harvard University Press, 1960.