America Transformed: The Rise and Legacy of American Progressivism. New York, NY: Encounter Books, 2021.
American Progressivism. Edited and introduced by RJP and William J. Atto. Lanham, MD: Lexington Books, 2008.
Woodrow Wilson and the Roots of Modern Liberalism. Lanham, MD: Rowman & Littlefield, 2005.
Woodrow Wilson: The Essential Political Writings. Edited and introduced. Lanham, MD: Lexington Books, 2005.
Modern America and the Legacy of the Founding. Edited, with Thomas G. West. Lanham, MD: Lexington Books, 2007.
Challenges to the American Founding: Slavery, Historicism, and Progressivism in the Nineteenth Century. Edited, with Thomas G. West. Lanham, MD: Lexington Books, 2005.
The American Founding and the Social Compact. Edited, with Thomas G. West. Lanham, MD: Lexington Books, 2003.
Founding the Criminal Law: Punishment and Political Thought in the Origins of America. DeKalb: Northern Illinois University Press, 2000.