John Lofland is professor emeritus of sociology at the University of California, Davis, and author of Doomsday Cult: A Study of Conversion, Proselytization and Maintenance of Faith, which stemmed from research among the Unification Church’s U.S. members in the 1960s.

Steven Hassan has written several books about cult experiences, including Freedom of Mind: Helping Loved Ones Leave Controlling People, Cults and Beliefs. Hassan lives in the Boston area.

Michael Breen is the founder of a public relations firm in South Korea. He calls himself a lapsed member of the Unification Church and is the author of Sun Myung Moon: The Early Years 1920-53.

Read a Feb. 7, 2010, NPR story about Sun Myung Moon’s efforts to reinvigorate the Unification Church.

Read an April 2, 2010, Forbes story about Sun Myung Moon’s sons vying to reinvigorate the spiritual enterprise.

Read a March 24, 2012, Reuters story about one of the mass weddings over which Sun Myung Moon presided.

An unofficial Unification Church site posts numerous links to Moon’s teachings, questions and answers about Unificationism, and other matters.

Read an obituary for Sun Myung Moon from The Washington Times, the newspaper Moon founded.

Read an obituary for Sun Myung Moon from The New York Times.