1960 - In the Days of McKinley by Margaret Leech
1961 - Between War and Peace: The Potsdam Conference by Herbert Feis
1962 - The Triumphant Empire: Thunder-Clouds Gather in the West, 1763-1766 by Lawrence H. Gipson
1963 - Washington, Village and Capital, 1800-1878 by Constance McLaughlin Green
1964 - Puritan Village: The Formation of a New England Town by Sumner Chilton Powell
1965 - The Greenback Era by Irwin Unger
1966 - The Life of the Mind in America by Perry Miller
1967 - Exploration and Empire: The Explorer and the Scientist in the Winning of the American West by William H. Goetzmann
1968 - The Ideological Origins of the American Revolution by Bernard Bailyn
1969 - Origins of the Fifth Amendment by Leonard W. Levy
According to The Pulitzer Prize.