C. B. S. [Seymour, Charles Bailey]. "Dramatic Feuilleton." New York Saturday Press, December 23, 1865, 328-329.
Browne, Junius Henri. The Great Metropolis; A Mirror of New York. Hartford: American Publishing, 1869.
"Appletons' Cyclopaedia of American Biography, Volume III, Grinnwell-Lockwood." In Appletons' Cyclopaedia of American Biography, Volume III, Grinnwell-Lockwood, edited by Wilson, James Grant and John Fiske. New York: D. Appleton & Co., 1888.
"In and about the City: Death of Charles I. Pfaff. Something about the Proprietor of the Once Famous "Bohemia."." New York Times, April 26, 1890, 2.
Eytinge, Rose. The Memories of Rose Eytinge: Being Recollections & Observations of Men, Women, and Events, during Half a Century. New York: Frederick A. Stokes, 1905.
Wildes, Harry Emerson. Dictionary of American Biography. Base Set. American Council of Learned Societies, 1928-1936. Reproduced in <cite>Biography Resource Center</cite>. Farmington Hills, Mich.: Thomson Gale, 2006. http://www.galenet.com/servlet/BioRC, 1928.
Whitman, Walt. "Letter to William D. O'Connor, May 5, 1867." Walt Whitman: The Correspondence 1, (1961): 327-329.
Whitman, Walt. "Letter to William D. O'Connor, May 5, 1867." Walt Whitman: The Correspondence 1, (1961): 327-329.
The Vault at Pfaff's