Robert Charles Hill (1917–1978)

Non-career appointee
State of Residence: New Hampshire

1. Ambassador Extraordinary and Plenipotentiary (Costa Rica)
   Appointed: October 23, 1953
   Presentation of Credentials: November 4, 1953
   Termination of Mission: Left post on September 10, 1954
   • Commissioned during a recess of the Senate; recommissioned on January 26, 1954, after confirmation.
2. Ambassador Extraordinary and Plenipotentiary (El Salvador)
   Appointed: September 25, 1954
   Presentation of Credentials: November 4, 1954
   Termination of Mission: Left post on September 21, 1955
   • Commissioned during a recess of the Senate; recommissioned on December 3, 1954, after confirmation.
3. Assistant Secretary of State for Legislative Affairs
   Appointed: March 7, 1956
   Entry on Duty: March 9, 1956
   Termination of Appointment: June 26, 1957
4. Ambassador Extraordinary and Plenipotentiary (Mexico)
   Appointed: May 20, 1957
   Presentation of Credentials: July 25, 1957
   Termination of Mission: Left Mexico December 1, 1960
5. Ambassador Extraordinary and Plenipotentiary (Spain)
   Appointed: May 1, 1969
   Presentation of Credentials: June 12, 1969
   Termination of Mission: Left post on January 12, 1972
6. Ambassador Extraordinary and Plenipotentiary (Argentina)
   Appointed: December 19, 1973
   Presentation of Credentials: February 15, 1974
   Termination of Mission: Left post on May 10, 1977