Original: His life is well documented in the beautifully written biography by his wife Valerie, "The Disciple and His Devil," published by McGraw-Hill in 1970 and republished by iUniverse in 2004.
Simplified: His life is well documented in the beautifully written biography by his wife Valerie, "The Disciple and His Devil," published by McGraw-Hill in 1970 and republished by iUniverse in 1984.