* The American Party in its Relations to Slavery (1841)
* The Shoulder-knot; or, Sketches of the Three-fold Life of Man: Infancy, Youth, and Manhood (1843)
* Thoughts on the True Source of Power in the United States and on the True Objects of Government; with Observations on Banking and Currency (1844)
* The Life and Times of S. Gorton (1846)
* Our Country, Its Dangers, and Its Safety; or, National Sins, the Source of National Calamities (1848)
* California: A Book for the People (1848)
* Slavery and the Union: A View of the Diplomatic Relation Between the United States and Great Britain, America, France, Spain, and Russia, in Relation to Slavery (1861)
* Europe and America: Their Social, Political, and Religious Institutions (1881)
* Thoughts on the True Source of Power in the United States and on the True Objects of Government; with Observations on Banking and Currency (2007)
Pamphlets:
* The Case of the State of Rhode-Island, Respecting the Boundary-Line between this State and the State of Massachusetts, and between this State and the State of Connecticut (1841)
* Address on the Late War with Great Britain (1842)
* An Oration on the Life, Character and Public Services of Henry Wheaton, LL. D., Resident Minister of the United States, at the Court of Berlin, Who Died in Berlin, on the 11th of March, 1848 (1849)
* Slavery and the Union (1861)
* The Relation Between Civil Government and Religion (1882)
Other writings:
* Various articles and letters in newspapers and periodicals