The website of the Hartford Institute for Religion Research has a New Religious Movements page with extensive links, including a listing of articles on Scientology.

Beliefnet summarizes some of Scientology’s basic tenets.

ReligiousTolerance.org posts information about the Church of Scientology.

An explanation of Scientology beliefs and practices can be found in “Scientology: The Marks of Religion,” which was written by Frank Flinn, an adjunct professor of religious studies at Washington University in St. Louis.

The Religious Movements Homepage Project provides extensive information and links on Scientology.

The “What is Scientology?” website explains the religion’s origins, principles, services and more. It also features a glossary of terms.

The website of the Church of Scientology International includes a wide range of information, as well as links to Scientology resources. Contact through the website.

Fred Plumer, a retired minister, is head of The Center for Progressive Christianity, a web-based network of progressive faith communities. It is based in Gig Harbor, Wash.

Peter Laarman of Los Angeles is executive director of Progressive Christians Uniting and an ordained United Church of Christ minister. He is editor of the just-published Getting on Message: Challenging the Christian Right from the Heart of the Gospel (Beacon Press, 2006) and knows a lot of other groups active on this subject.