According to Jon Krakauer, Chris McCandless took about nine or ten books with him on his journey to Alaska and "Into the Wild".  Those books included "Education of a Wandering Man" by Louis L'Amour, "Walden" by Henry David Thoreau, "The Terminal Man" by Michael Crichton, "O Jerusalem" by Larry Collins and Dominique Lapierre, "The Death of Ivan Ilyich" by Leo Tolstoy, ""Family Happiness and other stories" by Leo Tolstoy, "Doctor Zchivago" by Boris Pasternak, and "Taras Bulbo" by Nikolai Gogal. There is a mention of an author named Robert Pirsig but the book title is not mentioned.  The last book that is mentioned to have been found in his bus was called "Tanaina Plantlore".  This is the book that Chris uses when he is in Alaska to find edible plants.

-Sam-