- Constitution of United States at the End of First Century
- Why I Am a Republican: History of the Republican Party, a Defense of Its Policy, and the Reasons Which Justify Its Continuance in Power, with Biographical Sketches of the Republican Candidates
- Reminiscences of Sixty Years in Public Affairs; Volume 1
- Assassination of Lincoln: Report.
- Reminiscences of Sixty Years in Public Affairs; Volume 2