Moon, Michael. Disseminating Whitman: Revision and Corporeality in Leaves of Grass. Cambridge: Harvard University Press, 1991.
Hyman, Martin D. "'Where the Drinkers & Laughers Meet': Pfaff's: Whitman's Literary Lair.." Seaport 26, (1991): 56-61.
Stansell, Christine. "Whitman at Pfaff's: Commercial Culture, Literary Life and New York Bohemia at Mid-Century." Walt Whitman Quarterly Review 10, no. 3 (1993): 107-126.
Asselineau, Roger. "When Walt Whitman Was a Parisian." In Walt Whitman of Mickle Street: A Centennial Collection, edited by Geoffrey M. Sill. Knoxville, TN: The University of Tennessee Press, 1994.
Guarneri, Carl J. The Utopian Alternative: Fourierism in Nineteenth-Century America. Cornell, NY: Cornell University Press, 1994.
Reynolds, David. "Politics and Poetry: Leaves of Grass and the Political Crisis of the 1850s." In The Cambridge Companion to Walt Whitman, edited by Ezra Greenspan. New York: Cambridge Univeristy Press, 1995.
Loving, Jerome. "Walt Whitman: The Song of Himself." Walt Whitman: The Song of Himself (1999): 568 p.
Asselineau, Roger. The Evolution of Walt Whitman: An Expanded Edition. Iowa City: Universtiy of Iowa Press, 1999.
Katz, Jonathan Ned. "Love Stories: Sex Between Men Before Homosexuality." Love Stories: Sex Between Men Before Homosexuality (2001).
Wilson, Peter Lamborn. "Stephen Pearl Andrews." In Dictionary of Literary Biography, Volume 250: Antebellum Writers in New York, Second Series, edited by Kent P. Ljungquist. Detroit: Gale, 2001.
Levin, Joanna Dale. "American Bohemias, 1858-1912: A Literary and Cultural Geography." Ph.D Dissertation; Stanford University, 2001.
Traubel, Horace. "Intimate with Walt: Selections from Whitman's Conversations with Horace Traubel, 1888-1892." In Intimate with Walt: Selections from Whitman's Conversations with Horace Traubel, 1888-1892, edited by Schmidgall, Gary. Iowa City: University of Iowa Press, 2001.
Sentilles, Renee M. "Performing Menken: Adah Isaacs Menken and the Birth of American Celebrity." Performing Menken: Adah Isaacs Menken and the Birth of American Celebrity (2003).
"Walt Whitman: America's 'First' Bohemian." Poetrybay: An Online Poetry Magazine for the 21st Century (2003).
Epstein, Daniel Mark. Lincoln and Whitman: Parallel Lives in Civil War Washington. New York: Random House Trade Paperbacks, 2004.
Belasco, Susan. "From the Field: Walt Whitman's Periodical Poetry." American Periodicals 14, no. 2 (2004): 247-59.
Folsom, Ed and Kenneth M. Price. Re-Scripting Walt Whitman: An Introduction to His Life and Work. Malden, MA: Blackwell, 2005.
The Vault at Pfaff's