These titles are:
1. Love Cults and Faith Healers by Arthur Orrmont, 1961;
2. Cults of America by Maurice Beam, 1964;
3. My Life with Charles Manson by Paul Watkins and Guillermo Soledad, 1979; and
4. The Manson File by Nikolas Schreck, 1988.
These files are all available in PDF form at http://groups.yahoo.com/group/krishnaventa/