- American Slavery and Finances, Volume 1; Volume 9
- Letter of Hon. R. J. Walker, on the Purchase of Alaska, St. Thomas and St. John ..
- Argument of Robert J. Walker Esq Before the Supreme Court of the United States on the Mississippi
- Letter of Hon. R. J. Walker, in Favor of the Reelection of Abraham Lincoln
- An Outline of the Empire of the West: Including the United Kingdom, the United States, and the British Colonies, London