Lincoln at Peoria: The Turning Point
From the Gilder Lehrman Institute website:
"On October 16, 1854, from the steps of the courthouse in Peoria, Illinois, an obscure former congressman named Abraham Lincoln delivered a speech arguing that slavery was incompatible with the Founders' vision of America as articulated in the Declaration of Independence. Lewis Lehrman, co-founder of the Gilder Lehrman Institute of American History and author of Lincoln at Peoria: The Turning Point, explores the origins and the consequences of this important speech."