Belasco, Susan. "From the Field: Walt Whitman's Periodical Poetry." American Periodicals 14, no. 2 (2004): 247-59.
Karbiener, Karen. "Whitman at Pfaff's: Personal Space, a Public Place, and the Boundary-Breaking Poems of <cite>Leaves of Grass</cite> (1860)." In Literature of New York, edited by Sabrina Fuchs-Abrams. Newcastle upon Tyne, U.K.: Cambridge Scholars, 2009.
Lause, Mark A. The Antebellum Crisis and America's First Bohemians. Kent, OH: Kent State University Press, 2009.