- The Lehrman Institute – The Lehrman Institute is dedicated to public policy, educational and historical research.
- Lincoln at Peoria – Lincoln at Peoria: The Turning Point explains how Abraham Lincoln’s speech at Peoria in 1854 was the turning point in the development of his antislavery campaign.
- AbrahamLincoln.org – AbrahamLincoln.org supports research about President Abraham Lincoln’s life, Abraham Lincoln’s role in the Civil War and Abraham Lincoln’s role in Emancipation.
- Lincoln & Churchill – Lincoln & Churchill compares the tenures of Abraham Lincoln and Winston S. Churchill and the similar challenges they endured as heads of state during important wars.
- Mr. Lincoln’s White House – Examines the events that occurred and the people who worked with President Lincoln in Washington during the tumultuous years of the Civil War.
- Mr. Lincoln and the Founders – Examines the impact of the Founders, the Declaration of Independence and the Constitution on Mr. Lincoln’s life, political thinking and political actions in the 1850s and 1860s.
- Mr. Lincoln and Freedom – Details the progress of Mr. Lincoln’s opposition to slavery from his years in the Illinois State Legislature to the passage of the Thirteenth Amendment abolishing slavery.
- Mr. Lincoln and Friends – Reviews the many men and a few women whose friendships helped determine Mr. Lincoln’s political progress and success in the Springfield, Illinois state capital and in the nation’s capital, Washington, D.C.
- Mr. Lincoln and New York – Discusses the many ways in which the center of 19th century American political, media and economic power interacted with, supported and tormented Mr. Lincoln both before and during his Presidency.
- Abraham Lincoln’s Classroom – Resources for scholars and groups involved in the study of Abraham Lincoln’s life, the impact he had on the preservation of the Union and the emancipation of black slaves.
- Abraham Lincoln and the Civil War Blog – Chronicles the events of the Civil War.
- Gilder Lehrman Institute of American History – Nonprofit organization that supports the study of American history and offers resources for teachers and students.
- Fox News articles by Lewis E. Lehrman