Robert G. Minor served in the Office of Strategic Services (OSS) in World War II and was associated with operations in Belgrade. Minor also worked for Soviet intelligence at the same time. Minor was identified in the Venona project as one of about 20 Soviet agents within the agency.
- Testimony of Joseph Freeman, Executive Sessions of the Senate Permanent Subcommittee on Government Operations, Eighty-third Congress, First Session, 1 July 1953, v. 2, p. 1205. 
- Browder, Earl. A talk about the Communist Party. Introduction by Robert Minor. Workers Library Publishers, New York. 1943.
- American National Biography, "Robert Minor," (New York: Oxford University Press, 1999) 24 vols.
- Executive Sessions of the Senate Permanent Subcommittee on Government Operations vol. 2, Eighty-third Congress, First Session (1953), p. 1205 (pg.300 PDF).