- The Constitution in Crisis Times 1918-1969
- World War I and the Origin of Civil Liberties in the United States (Norton Essays in American History)
- The Meaning of Freedom of Speech: First Amendment Freedoms from Wilson to FDR (Contributions in American History)
- From Sophocles to Picasso The Present-day Vitality of the Classical Tradition
- The Shaping of the First Amendment: 1791 to the Present (Bicentennial Essays on the Bill of Rights)