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• BA Cornell University 1969
• PhD Princeton University 1975

American literature, culture, and society

Writers of the American Renaissance, especially Emerson, Thoreau, and Whitman; 19th century reform movements.

• Editor,The Blackwell Companion to American Literature, Volume 2: 1820-1914 (Wiley-Blackwell, forthcoming).
• Co-editor, with Susan Belasco, The Bedford Anthology of American Literature: Volume 1, Beginnings to 1865; and Volume 2, 1865 to the Present.  First Edition (Bedford/St. Martins, 2008); Second Edition (Bedford/St. Martins, 2014).
• Thoreau's Complex Weave: The Writing of "A Week on the Concord and Merrimack Rivers," With the Text of the First Draft (University Press of Virginia, 1986).
• Historical Introduction to The Illustrated "A Week on the Concord and Merrimack Rivers" (Princeton University Press, 1983).
• Historical Introduction to A Week on the Concord and Merrimack Rivers (1980) in the Princeton University Press edition of The Writings of Henry D. Thoreau.
• Editorial Contributions, the Journal, Volumes 1 (1980) and 2 (1984) in the Princeton University Press edition of The Writings of Henry D. Thoreau. 
•  Essays in:
• The Oxford Handbook of Transcendentalism (Oxford University Press, 2010).
• The Emerson Dilemma: Essays on Emerson and Social Reform (University of Georgia Press, 2001).
• Approaches to Teaching Thoreau's "Walden" and Other Works (Modern Language Association, 1996).
• The Cambridge Companion to Henry David Thoreau (Cambridge University Press, 1995).
• Critical Essays on Henry David Thoreau's "Walden" (G.K. Hall, 1988).
• Entries in the Biographical Dictionary of Transcendentalism and the Encyclopedia of Transcendentalism (Greenwood Press, 1996).
• Numerous articles and reviews in various journals, including American Literature, Emerson Society Papers, ESQ: A Journal of the American Renaissance, Modern Intellectual History, New England Quarterly, Nineteenth-Century Literature, Resources for American Literary Study, Studies in the American Renaissance, Studies in Bibliography, Thoreau Society Bulletin, and the Walt Whitman Review.

Editorial board of ESQ: A Journal of the American Renaissance and The Collected Works of Ralph Waldo Emerson (Harvard University Press); Advisory Board, Uncle Tom's Cabin and American Culture Project; Thoreau's Complex Weave cited as one of the "Outstanding Academic Books" of 1986-87 by Choice; National Endowment for the Humanities Fellow, the American Antiquarian Society 1984-85; Visiting Fellow, the Henry E. Huntington Library and Art Gallery 1975.