Harrer tells his extraordinary tale in Seven Years in Tibet, which was originally published in 1953. His was a personal and not a spiritual journey, but he is a straightforward writer and his insights are marvelous.
Seven Years in Tibet was made into a beautifully filmed and earnest but flat movie starring Brad Pitt in 1997.
Further reading on Tibet:
Buddha's Warriors: The Story of the CIA-Backed Tibetan Freedom Fighters, the Chinese Invasion and the Ultimate Fall of Tibet by Mikel Dunham (2005)Finally, a book that seems like it is straight out of an Indiana Jones flick: Himmler's Crusade: The Nazi Expedition to Find the Origins of the Aryan Race by Christopher Hale.
Contemporary Tibet: Politics, Development, and Society in a Disputed Region by Barry Sautman and June Teufel Dreyer (eds.) (2008)
Demystifying Tibet: Unlocking the Secrets of the Land of Snows by Lee Feigon (1996)
In Exile From the Land of Snows by John F. Avedon (1984)Sacred Spaces and Powerful Places in Tibetan Culture: A Collection of Essays by Toni Huber (ed.) (1999)
The Status of Tibet: History, Rights and Prospects in International Law by Van Pragg, Michael C. Van Walt. (1987)
This fascinating 2007 book reveals one of the strangest episodes in the history of science and war, the secret expedition to Tibet ordered by Himmler, Adloph Hitler's No. 2 man and obsessed occultist, on the eve of World War II to trace what he fantastically believed were the origins of the Aryan race.