Britton, Wesley. Beyond Bond: Spies in Fiction and Film. Westport, Conn.: Praeger, 2005. Traces the evolution of the figure of the spy in espionage thrillers and other works of film and fiction. Provides perspective for Harvester’s works.
Hepburn, Allan. Intrigue: Espionage and Culture. New Haven, Conn.: Yale University Press, 2005. This study of British and American spy fiction begins with three general chapters on the appeal, emotional effects, and narrative codes of the genre, thus helping readers understand Harvester’s novels.
Hitz, Frederick P. The Great Game: The Myth and Reality of Espionage. New York: Alfred A. Knopf, 2004. Hitz, the former inspector general of the Central Intelligence Agency, compares fictional spies to actual intelligence agents with the intent of demonstrating that truth is stranger than fiction. Although Harvester is not directly discussed, the work helps place his fiction within the genre.
McCormick, Donald, and Katy Fletcher. Spy Fiction: A Connoisseur’s Guide. New York: Facts on File, 1990. Includes an entry on Harvester, comparing him to his contemporaries, precursors, and followers.
Smith, Myron J., Jr., and Terry White. Cloak and Dagger Fiction: An Annotated Guide to Spy Thrillers. 3d ed. Westport, Conn.: Greenwood Press, 1995. Detailed annotated bibliography of spy fiction comments on Harvester’s works and career.