"The concept of backpacker books goes back to the days of the hippy trail when travellers would carry such classics as the I Ching, the Tibetan Book of the Dead or anything by Herman Hesse. A backpacker classic should have an element of profundity, preferably mystical -if not it should have cult status or be a statement about who you really are. There is an element of self discovery in setting off - the path to enlightenment, the journey inwards...A backpacker book is not a 'beach read'--the book must be worth the weight and space it takes up and should be reverentially handed on to other travellers or left in a hotel or bus station for another seeker to chance upon."
Bookride has a list of
Backpacker Classics (via
The Goat).