John Overholt is Assistant Curator of the Donald and Mary Hyde Collection of Dr. Samuel Johnson and of Early Modern Books and Manuscripts at the Houghton Library of Harvard University. Thomas A. Horrocks is Associate Librarian for Collections, Houghton Library of Harvard University. James Engell, Professor of English and Comparative Literature, Harvard, is the author of The Creative Imagination, editor and contributor to Johnson and His Age, and coeditor (with David Perkins) of Teaching Literature: What is Needed Now, all published by Harvard University Press. He is also coeditor of the Bollingen edition of the Biographia Literaria for the Collected Works of Coleridge.