The more I have studied Lincoln, the more I have followed his thought processes, the more I am convinced that he understood leadership better than any other American president.

(1954)
Lincoln Reconsidered: Essays on the Civil War Era (1947 2nd edition 1961) (ISBN 0-679-72310-2)
Editor Why the North Won the Civil War (1962) (ISBN 0-02-031660-7)
Civil War and Reconstruction (1961; 2001) (ISBN 0-393-97427-8) 2001 edition with Jean H. Randall at the University of Illinois. Charles Sumner and the Coming of the Civil War (1960) prize-winning scholarly biography to 1860; Charles Sumner and the Rights of Man (1970) biography from 1861.

David Herbert Donald (October 1 1920 – May 17 2009) was an American historian.