Martin, John M. William R. King and the Compromise of 1850. North Carolina Historical Review 39 (October 1962): 500-518.
___. William R. King: Jacksonian Senator. Alabama Review 18 (October 1965): 243-67.
___. William R. King and the Vice Presidency. Alabama Review 16 (January 1963): 35-54.
___. William Rufus King: Southern Moderate. Ph.D. dissertation, University of North Carolina at Chapel Hill, 1956.
U.S. Congress. Obituary Addresses on the Occasion of the Death of Hon. William R. King, of Alabama, Vice-President of the United States. 33d Cong., 1st ses., 1853-1854. Washington: R. Armstrong, 1854.
Watson, Elbert L. William Rufus King. In Alabama United States Senators, pp. 19-22. Huntsville, AL: Strode Publishers, 1982.