Read an excerpt of Mark Noll’s book A History of Christianity in the United States and Canada. The section is titled “The Ambiguous Religion of President Abraham Lincoln” and is reprinted on the Web site Adherents.com.

Read Richard Wightman Fox’s Jan. 18, 2006, article that appeared on Slate.com about Lincoln’s faith and the culture wars.

The Lincoln Studies Center is at Knox College in Galesburg, Ill. Douglas Wilson and Rodney O. Davis are co-directors.

The Abraham Lincoln Presidential Library and Museum is in Springfield, Ill. The executive assistant is Sharon Petrilli.

The Abraham Lincoln Institute is an organization based in Washington, D.C., that provides free informational resources about the life and work of Lincoln.

Lincoln/Net is a project of Northern Illinois University to put all of Lincoln’s political and personal materials online. A section on historical themes includes information on the religion and culture of Lincoln’s times.

The Library of Congress maintains a searchable online collection of Abraham Lincoln’s papers.

The Abraham Lincoln Association’s Abraham Lincoln Online is a virtual library of all things Lincoln – biographies, news, events and the 16th president’s own writings and speeches, including a collection of his statements on religion.

David Gordon White is a professor of religious studies at the University of California, Santa Barbara. He is an expert on the religions of South Asia and contributed an entry on dogs to The Encyclopedia of Religion.