Doris Kearns Goodwin is one of America’s most popular historians and the best-selling author of Team of Rivals: The Political Genius of Abraham Lincoln.

Eric Foner is a history professor at Columbia University in New York City and author of A House Divided: America in the Age of Lincoln.

Rodney Davis is co-director of the Lincoln Studies Center at Knox College in Galesburg, Ill.

Michael Burlingame is a history professor emeritus at Connecticut College in New London. He wrote the 1995 book The Inner World of Abraham Lincoln and the 2008 book Abraham Lincoln: A Life.

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.