The American Religions Collection (ARC), much of which was assembled by J. Gordon Melton, primarily documents non-mainstream religions in America. The collection contains monographs, manuscript collections and serials. Melton's Encyclopedia of American Religions (6th ed., Gale Research, 1999) provides descriptive references to the various religious groups and, to a considerable extent, the collection is organized along the lines of the Encyclopedia.
http://www.library.ucsb.edu/speccoll/research/arc.html
For more detailed information on materials in ARC, contact David Tambo, Head of Special Collections (tel. 805-893-3420, fax. 805-893-5749). Dr. Melton also may be able to provide research assistance on an appointment basis; contact the Special Collections office (tel. 805-893-3062) for further details.