1. Biography of Henry David Thoreau, American Poems (2000-2007 Gunnar Bengtsson).
　　2. Johnson, Ellwood. The Goodly Word: The Puritan Influence in America Literature, Clements Publishing, 2005, p. 138.
　　3. Encyclopaedia of the Social Sciences, edited by Edwin Robert Anderson Seligman, Alvin Saunders Johnson, 1937, p. 12.
　　4. a b Thoreau, H. D. Resistance to Civil Government
　　5. Ancestors of Mary Ann Gillam and Stephen Old
　　6. History of the Fraternity System
　　7. Trivia-Library
　　8. Henry David Thoreau, Meet the Writers, Barnes & Noble.com
　　9. Biography of Henry David Thoreau, American Poems (2000-2007 Gunnar Bengtsson)
　　10. THUR-oh or Thor-OH? And How Do We Know? Thoreau Reader
　　11. Thoreau, H.D. Cape Cod
　　12. American Notebooks Nathaniel Hawthorne
　　13. Colman, William, et al, The Journals and Miscellaneous Notebooks of Ralph Waldo Emerson 16 vols. (Cambridge, Mass 1960-)
　　14. "Thoreau's Diploma". American Literature Vol. 17, May 1945. 174-175.
　　15. Dean, Bradley P. "A Thoreau Chronology".
　　16. Cheevers, Susan (2006). American Bloomsbury: Louisa May Alcott, Ralph Waldo Emerson, Margaret Fuller, Nathaniel Hawthorne, and Henry David Thoreau; Their Lives, Their Loves, Their Work. Detroit: Thorndike Press. Large print edition. p. 90. ISBN 078629521X.
　　17. Conrad, Randall. (Fall 2005). "The Machine in the Wetland: Re-imagining Thoreau's Plumbago-Grinder". Thoreau Society Bulletin (253).
　　18. A Chronology of Thoreau's Life, with Events of the Times, The Thoreau Project, Calliope Film Resources, accessed 11th June 2007
　　19. Rosenwald, Lawrence. "The Theory, Practice & Influence of Thoreau's Civil Disobedience". William Cain, ed. A Historical Guide to Henry David Thoreau. Cambridge: Oxford University Press, 2006.
　　20. Thoreau, H. D. letter to Ralph Waldo Emerson 23 February 1848
　　21. Alcott, Bronson. Journals. Boston: Little, Brown, 1938.
　　22. Thoreau's Civil Disobedience - 2
　　23. Cheevers, Susan (2006). American Bloomsbury: Louisa May Alcott, Ralph Waldo Emerson, Margaret Fuller, Nathaniel Hawthorne, and Henry David Thoreau; Their Lives, Their Loves, Their Work. Detroit: Thorndike Press. Large print edition. p. 234. ISBN 078629521X.
　　24. Cheevers, Susan (2006). American Bloomsbury: Louisa May Alcott, Ralph Waldo Emerson, Margaret Fuller, Nathaniel Hawthorne, and Henry David Thoreau; Their Lives, Their Loves, Their Work. Detroit: Thorndike Press. Large print edition. p. 244. ISBN 078629521X.
　　25. Henry David Thoreau, The Annotated Walden (1970), Philip Van Doren Stern, ed., pp. 96, 132
　　26. Reynolds, David S. John Brown, Abolitionist Knopf (2005), p. 4
　　27. Brooks, Van Wyck. The Flowering of New England. New York: E. P. Dutton and Company, Inc., 1952. p. 310
　　28. a b Cheevers, Susan (2006). American Bloomsbury: Louisa May Alcott, Ralph Waldo Emerson, Margaret Fuller, Nathaniel Hawthorne, and Henry David Thoreau; Their Lives, Their Loves, Their Work. Detroit: Thorndike Press. Large print edition. p. 241. ISBN 078629521X.
　　29. http://www.wsu.edu/~hughesc/thoreau.htm"Henry David Thoreau, Philosopher" by Roderick Nash
　　30. Kifer, Ken Analysis and Notes on Walden: Henry Thoreau’s Text with Adjacent Thoreauvian Commentary
　　31. Miller, Webb. I Found No Peace. Garden City, 1938. 238-239
　　32. King, M.L. Autobiography of Martin Luther King, Jr. chapter two
　　33. Skinner, B. F. A Matter of Consequences
　　34. Skinner, B. F. Walden Two (1948)
　　35. Stevenson, Robert Louis. "Henry David Thoreau: His Character and Opinions". Cornhill Magazine. June 1880.
　　[edit] Further reading
　　* Henry David Thoreau: A Week, Walden, The Maine Woods, Cape Cod (Robert F. Sayre, ed.) (Library of America, 1985) ISBN 978-0-94045027-1
　　* Henry David Thoreau: Collected Essays and Poems (Elizabeth Hall Witherell, ed.) (Library of America, 2001) ISBN 978-1-88301195-6
　　* Henry David Thoreau: The Price of Freedom: Excerpts from Thoreau’s Journals ISBN 978-1434805522
　　* Bode, Carl. Best of Thoreau's Journals. Southern Illinois University Press. 1967.
　　* Botkin, Daniel. No Man's Garden.
　　* Dassow Walls, Laura. Seeing New Worlds: Henry David Thoreau and 19th Century Science. University of Wisconsin Press. 1995. ISBN 978-0-29914740-2
　　* Dean, Bradley P. ed., Letters to a Spiritual Seeker. New York: W. W. Norton & Company, 2004.
　　* Harding, Walter. The Days of Henry Thoreau. Princeton University Press, 1982.
　　* Hendrix, George. "The Influence of Thoreau's "Civil Disobedience" on Gandhi's Satyagraha". The New England Quarterly. 1956.
　　* Howarth, William. The Book of Concord: Thoreau's Life as a Writer. Viking Press, 1982.
　　* Meyerson, Joel et al. The Cambridge Companion to Henry David Thoreau. Cambridge University Press. 1995.
　　* Nash, Roderick. Henry David Thoreau, Philosopher.
　　* Parrington, Vernon. Main Current in American Thought. V 2 online. 1927.
　　* Petroski, Henry. H. D. Thoreau, Engineer. American Heritage of Invention and Technology, Vol. 5, No. 2, pp. 8-16.