Robert Stephen Ingersoll (1914–2010)

Non-career appointee
State of Residence: Illinois

1. Ambassador Extraordinary and Plenipotentiary (Japan)
   Appointed: February 29, 1972
   Presentation of Credentials: April 12, 1972
   Termination of Mission: Left post on November 8, 1973
2. Assistant Secretary of State for East Asian and Pacific Affairs
   Appointed: December 19, 1973
   Entry on Duty: January 8, 1974
   Termination of Appointment: July 9, 1974
3. Deputy Secretary of State
   Appointed: June 30, 1974
   Entry on Duty: July 10, 1974
   Termination of Appointment: March 31, 1976