- The Supreme Court: Process and Change (1963)
- Portrait of a Decade: The Second American Revolution (1964) (civil rights)
- The Supreme Court and How It Works: The Story of the Gideon Case (1966)(a children's book)*
- Make No Law: The Sullivan Case and the First Amendment (1991)
- Freedom for the Thought That We Hate: A Biography of the First Amendment (2007).
- Written into History: Pulitzer Prize Reporting of the Twentieth Century from the New York Times (2001)(edited by Lewis) (the articles included include a wide range of topics, from major world events to local stories you might never have heard of; it would be handy for someone who only has a few minutes at a time for non-required reading).
* I didn't realize it when I wrote this post an hour and a half ago, but today is International Children's Book Day. Isn't it cool that Lewis adapted Gideon's Trumpet so kids could learn about the Supreme Court and the right to counsel?