Osborne (ed.), Arthur - The Collected Works of Ramana Maharshi, 1959
Osborne (ed.), Arthur - Ramana Maharshi and the Path of Self-Knowledge, 1954
Osborne, Arthur - The Incredible Sai Baba, 1957
Overton Fuller, Jean - Blavatsky and Her Teachers, 1988
Petersen, Hans C. - Report From Europe, n.d. 1963?
Pitchon, Patricia - Searching for Maitreya, 2002