1920: The War with Mexico by Justin H. Smith
1921: The Victory at Sea by William Sowden Sims and Burton J. Hendrick
1922: The Founding of New England by James Truslow Adams
1923: The Supreme Court in United States History by Charles Warren
1924: The American Revolution: A Constitutional Interpretation by Charles
Howard McIlwain
1925: History of the American Frontier by Frederic L. Paxson
1926: A History of the United States by Edward Channing
1927: Pinckney’s Treaty by Samuel Flagg Bemis
1928: Main Currents in American Thought by Vernon Louis Parrington
1929: The Organization and Administration of the Union Army, 1861-1865 by Fred Albert Shannon
According to The Pulitzer Prize.