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- Baehler, David M. (5)
- Sampson, Charles S. (3)
- Slany, William Z. (3)
- United States. Congress (3)
- United States. Dept. of State. Office of the Historian (3)
- Bernbaum, John A. (1)
- Glennon, John P., 1932- (1)
- LaFantasie, Glenn W. (1)
- United States. Dept. of State (1)
- United States. Dept. of State. Historical Office (1)