Frank Lyon Polk (1871–1943)

Non-career appointee
State of Residence: New York
  1. Counselor
    Appointed: August 30, 1915
    Entry on Duty: September 16, 1915
    Termination of Appointment: June 30, 1919
    • Commissioned as Counselor for the Department of State. Commissioned during a recess of the Senate; recommissioned after confirmation on Dec 17, 1915.
  2. Under Secretary of State
    Appointed: June 26, 1919
    Entry on Duty: July 1, 1919
    Termination of Appointment: June 15, 1920
  3. Secretary of State ad interim
    Appointed: February 14, 1920
    Termination of Appointment: March 14, 1920
    • Under Secretary of State; Acting Secretary of State