Since the last full life of G. I. Gurdjieff appeared in 1991, a number of books have corrected received facts and disclosed new information on selected portions of his life; but, the recent availability of formerly guarded records in the former Soviet Union, and the accumulation of facts in web sites concerning Gurdjieff, his family and his followers, call for disclosure. Considering the rapid expansion of interest in his work, there is need for...