Wilson, James Grant and John Fiske. Appletons' Cyclopaedia of American Biography, Volume IV, Lodge-Pickens. New York: D. Appleton & Co. (1888-1-1).
WORKS ABOUT - Ludlow, Fitz Hugh
"[Acute gastritis, which carried off Charles Pfaff last week]." Brooklyn Eagle. (1890-4-27).
Howells, William Dean. "First Impressions of Literary New York." Harper's New Monthly Magazine. (1895-6-1).
Rawson, A. L.. "A Bygone Bohemia." Frank Leslie's Popular Monthly. (1896-1-1).
Hemstreet, Charles. Literary New York: Its Landmarks and Associations. New York: G.P. Putnam. (1903-1-1).
Greenslet, Ferris. The Life of Thomas Bailey Aldrich. Boston: Houghton Mifflin. (1908-1-1).
Winter, William. Old Friends; Being Literary Recollections of Other Days. New York: Moffat, Yard and Company. (1909-1-1).
Seitz, Don Carlos. Artemus Ward (Charles Farrar Browne): A Biography and Bibliography. NY: Harper & Brothers. (1919-1-1).
Aldrich, Thomas Bailey, Mrs. (Lillian Woodman Aldrich). Crowding Memories. Boston: Houghton, Mifflin. (1920-1-1).
Parry, Albert. Garrets and Pretenders: A History of Bohemianism in America. New York: Covici, Friede. (1933-1-1).
Pattee, Fred Louis. The Feminine Fifties. New York: D. Appleton-Century Company, Incorporated. (1940-1-1).
Wolle, Francis. Fitz-James O'Brien: A Literary Bohemian of the Eighteen-Fifties. Boulder, Col.; University of Colorado. (1944-1-1).
Hahn, Emily. Romantic Rebels; An Informal History of Bohemianism in America. Boston; Houghton Mifflin. (1967-1-1).
Lalor, Eugene T.. "The Literary Bohemians of New York City in the Mid-Nineteenth Century." The Literary Bohemians of New York City in the Mid-Nineteenth Century. Ph.D. Dissertation, St. John's University. (1977-1-1).
Reynolds, David S.. Walt Whitman's America: A Cultural Biography. New York: Knopf. (1995-1-1).
Levin, Joanna Dale. "American Bohemias, 1858-1912: A Literary and Cultural Geography." American Bohemias, 1858-1912: A Literary and Cultural Geography. Ph.D Dissertation; Stanford University. (2001-1-1).
Auclair, Tracy. "The Language of Drug Use in Whitman's 'Calamus' Poems." Papers on Language and Literature. (2004-6-1). 227-60.
Reynolds, David S.. Walt Whitman. New York: Oxford University Press. (2005-1-1).
Zieger, Susan. "Pioneers of Inner Space: Drug Autobiography and Manifest Destiny." PMLA. (2007-10-1).
Lause, Mark A.. The Antebellum Crisis and America's First Bohemians. Kent, OH: Kent State University Press. (2009-1-1).