Joel Myerson. Walt Whitman: a descriptive bibliography. Pittsburgh series in bibliography. Pittsburgh: University of Pittsburgh Press, 1993.
William White. Walt Whitman’s journalism: a bibliography. Reprinted from the Walt Whitman review, Sept. 1968 (XIV, 67-141). Detroit: Wayne State University Press, 1969.
Library of Congress. Reference Department. Walt Whitman: a catalog based upon the collections of the Library of Congress. Boston: J.S. Canner, 1967.
J.R. LeMaster and Donald D. Kummings, eds. Walt Whitman: an encyclopedia. Garland reference library of the humanities, vol. 1877. New York: Garland, 1998.
Joann P. Krieg. A Whitman chronology. Iowa Whitman series. Iowa City: University of Iowa Press, 1998.
Edwin H. Eby. A concordance of Walt Whitman’s Leaves of grass and selected prose writings. Seattle: University of Washington Press, 1949-54. 5 vols.