About the book (from Wikipedia):
Seven Years in Tibet: My Life Before, During and After is an autobiographical travel book written by Austrian mountaineer Heinrich Harrer based on his real life experiences in Tibet between 1944 and 1951 during the Second World War and the interim period before the Communist Chinese People’s Liberation Army invaded Tibet in 1950.
The book covers the escape of Harrer and his companion, Peter Aufschnaiter, from a British internment camp in India. Harrer and Aufschnaiter then traveled across Tibet to Lhasa, the capital. Here they spent several years, and Harrer describes the contemporary Tibetan culture in detail. Harrer subsequently became a tutor and friend of the 14th Dalai Lama.