Phillip Berryman is an affiliated faculty member in the Latin American studies program at Temple University in Philadelphia. His books include Liberation Theology: Essential Facts About the Revolutionary Movement in Latin America — and Beyond (February 2013).

Michael E. Lee is associate professor of theology at the Jesuit-run Fordham University in New York. He teaches a course in liberation theologies and discussed his views on the subject in the March 2010 issue of U.S. Catholic.

Thia Cooper is associate professor of religion at Gustavus Adolphus College in St. Peter, Minn., and the author of Controversies in Political Theology: Development or Liberation?

Gustavo Gutierrez is John Cardinal O’Hara Professor of Theology at the University of Notre Dame. His book A Theology of Liberation: History, Politics and Salvation is considered a foundational work on Latin American liberation theology, and he contributed an essay to The Cambridge Companion to Liberation Theology.

See a list of the policies of different Christian denominations on homosexuality at ReligiousTolerance.org, which also maintains a list called “Homosexuality and religion: Policies of non-Judeo-Christian religions.”

FindLaw.com offers a history of legal cases (scroll toward bottom of page) on same-sex marriage.

The Constitutional Law Prof blog highlights legal cases involving same-sex marriage, the Defense of Marriage Act and other matters dealing with sexual orientation.

Lamba Legal lists countries and states that allow gay couples to marry or that recognize or provide protections for same-sex relationships through other means. Note that the publication was last updated in September 2011, so it doesn’t reflect recent changes.