Myerson, Joel, The Cambridge Companion to Henry David Thoreau, Cambridge University Press, 1995.

In addition to essays covering all of Thoreau's major works, this volume also includes essays discussing the author's friendship with Ralph Waldo Emerson, his changing reputation over the years, and other topics.

Richardson, Robert D., Jr., Henry Thoreau: A Life of the Mind, University of California Press, 1986.

This well-reviewed and highly regarded biography includes discussions of Walden and Thoreau's other major works.

Smith, David Clyde, The Transcendental Saunterer: Thoreau and the Search for Self, Frederic C. Beil, Inc., 1997. .

Versluis, Arthur, American Transcendentalism and Asian Religions, Oxford University Press on Demand, 1997.

Part of the Oxford Press Religion in America series, this book covers the beginning of Transcendentalist Orientalism in Europe and the complete history of American Transcendentalism to the twentieth century, with a focus on how Asian religions and cultures have influenced transcendentalism in the...