1930 - The War of Independence by Claude H. Van Tyne
1931 - The Coming of the War, 1914 by Bernadotte E. Schmitt
1932 - My Experiences in the World War by John J. Pershing
1933 - The Significance of Sections in American History by Frederick J. Turner
1934 - The People’s Choice by Herbert Agar
1935 - The Colonial Period of American History by Charles McLean Andrews
1936 - A Constitutional History of the United States by Andrew C. McLaughlin
1937 - The Flowering of New England, 1815-1865 by Van Wyck Brooks
1938 - The Road to Reunion, 1865-1900 by Paul Herman Buck
1939 - A History of American Magazines by Frank Luther Mott
According to The Pulitzer Prize.