Areas of Interest:
- Foreign policy of Nixon and Kissinger
- Post World War II American foreign policy
- U.S. history 1945-1974
- “Carter, Reagan, and the End of the Cold War.” Book manuscript in progress.
- Nixon's Economy: Boom, Busts, Dollars, & Votes (University of Kansas , 1998).
- The Unraveling of America: A History of Liberalism in the 1960s (Harper & Row, 1984).
- Farm Policies and Politics in the Truman Years (Harvard Univ., 1967).