John F. Martin Jr. was an American diplomat who served as Ambassador to Costa Rica from 1920 to 1921.[1][2]
References
- ^ Office, United States. Dept. of State. Historical (1982). United States chiefs of mission, 1778-1982. Dept. of State, Historical Office, Bureau of Public Affairs. p. 56.
- ^ Papers relating to the foreign relations of the United States. 1935. p. 845.
| Minister Resident |  | |
|---|---|---|
| Envoy Extraordinary and Minister Plenipotentiary | ||
| Ambassador Extraordinary and Plenipotentiary | ||
