Joseph Flack (1894–1955)

Career Foreign Service Officer
State of Residence: Pennsylvania

1. Ambassador Extraordinary and Plenipotentiary (Bolivia)
   Appointed: April 27, 1946
   Presentation of Credentials: July 15, 1946
   Termination of Mission: Left post on May 17, 1949
2. Ambassador Extraordinary and Plenipotentiary (Costa Rica)
   Appointed: June 24, 1949
   Presentation of Credentials: August 13, 1949
   Termination of Mission: Left post on September 21, 1950
3. Ambassador Extraordinary and Plenipotentiary (Poland)
   Appointed: September 20, 1950
   Presentation of Credentials: November 30, 1950
   Termination of Mission: Left Poland April 22, 1955