O'Brien, Fitz-James. "Literature as a Profession: Difficulties of Writers." New York Daily Times, November 13, 1852, 3.
[O'Brien, Fitz-James]. "Our Young Authors." Putnam's Monthly Magazine of American Literature, Science and Art, January 1, 1853, 74-78.
O'Brien, Fitz-James. "The Last Poet Out." Putnam's Monthly Magazine of American Literature, Science, and Art, August 1, 1854, 213-217.
O'Brien, Fitz-James. "The Boatmen of Kerry." In The Ballads of Ireland, edited by Edward Hayes. Boston: Alexander Moore, 1856.
O'Brien, Fitz-James. "Our Authors and Authorship. Melville and Curtis." Putnam's Monthly, April 11, 1857.
[O'Brien, Fitz-James]. "Seeing the World." Harper's New Monthly Magazine, September 1, 1857, 542-546.
O'Brien, Fitz-James. A Gentleman from Ireland. A Comedy, in Two Acts. To Which Are Added a Description of the Costume---Cast of Characters---Entrances and Exits---Relative Positions of the Performers on the Stage, and the Whole of the Stage Business. As Performed at Wallack's. New York: Samuel French, 1858.
O'Brien, Fitz-James. "Jubal, the Ringer." The Knickerbocker, or New-York Monthly Magazine, January 1, 1858, 230-234.