Theodore Roosevelt was only 50 years old when he left the White House in 1909, but his boundless energy kept him very much in the public eye until his death in 1919. In this lecture, historian Patricia O'Toole recounts the last decade of T.R.'s fascinating life, which included an unsuccessful run for the presidency as a third-party candidate, an attempt to raise and then command a battalion of American soldiers in World War I, and the tragic death of his son Quentin.

From the Gilder Lehrman website:

"The Cold War ended suddenly with the fall of the Berlin Wall and countless Soviet satellite governments across Eastern Europe before the Soviet Union itself disintegrated in the late 1980s and early 1990s. In this lecture, Thomas Blanton, Director of the National Security Archive at George Washington University explores the last days of the Cold War and explains how, as the Iron Curtain fell, the United States became the last superpower."

Manisha Sinha of the University of Massachusetts, Amherst, looks at the influence of black abolitionists on the policies and views of Abraham Lincoln, and the evolution of Lincoln's views on slavery and emancipation.

Reconstruction after the Civil War was America's first attempt at an interracial democracy. DeWitt Clinton Professor of History at Columbia University Eric Foner explains why an understanding of Reconstruction—and why it failed—is critical to understanding the civil rights movement of the 20th century.

Most Americans know George Washington's December 1776 crossing of the Delaware from the famous painting by Emmanuel Gottlieb Leutze, which depicts Washington standing bravely in a rowboat on stormy waters. David Hackett Fischer, author of Washington's Crossing, looks beyond the famous painting to the events of that tumultuous month. One of Washington's great strengths was his ability to lead men from different regions and walks of life. He was also known for his humane treatment of British prisoners—treatment that the British did not reciprocate with American prisoners.

Harriet Tubman was born into slavery in Maryland in 1820. After her escape to the North in 1849, she returned to the South more than a dozen times to ferry other slaves along the Underground Railroad. She later helped John Brown recruit men for his Harper's Ferry raid; and during the Civil War, Tubman served as a Union spy. In this lecture, historian Catherine Clinton details not only Tubman's life but also the quest to uncover new information on Tubman.

Richard Carwardine is Rhodes Professor of American History at Oxford University, author of Lincoln: A Life of Purpose and Power, and winner of the 2004 Lincoln Book Prize. In this lecture, he discusses different aspects of Lincoln's life. Why is Lincoln a mythic figure? How early in his career did he develop his views against slavery? What role did religion play in his life? Professor Carwardine analyzes Lincoln's greatness as well as his humility.

According to the Gilder Lehrman website, "Henry L. Luce Professor of the Civil War Era and Professor of History at Gettysburg College Allen Guelzo examines Abraham Lincoln's motivations for issuing the Emancipation Proclamation in January of 1863. Guelzo contends that the proclamation is among the most misunderstood of the Civil War era, a necessary and even desperate attempt by Lincoln to enact a form of emancipation that would pass legal muster. Guelzo traces the evolution of Lincoln's views on emancipation with particular emphasis on the strategic and moral calculus that factored into the momentous proclamation of 1863."