David Herbert Donald is the author of We Are Lincoln Men, Lincoln, which won the prestigious Lincoln Prize and was on the New York Times bestseller list for fourteen weeks, and Lincoln at Home. He has twice won the Pulitzer Prize, for Charles Sumner and the Coming of the Civil War, and for Look Homeward: A Life of Thomas Wolfe. He is the Charles Warren Professor of American History and of American Civilization Emeritus at Harvard University and resides in Lincoln, Massachusetts. Excerpt. © Reprinted by permission. All rights reserved. On the day after the Quincy debate, both Lincoln and Douglas got aboard the City, of Louisiana and sailed down the Mississippi River to Alton, for the final encounter of the campaign. Looking haggard with fatigue, Douglas opened the debate on October 15 in a voice so hoarse that in the early part of the speech he could scarcely be heard. After briefly reviewing the standard arguments over which he and Lincoln had differed since the beginning