George Strausser Messersmith was a United States ambassador to Austria, Cuba, Mexico, and Argentina. Messersmith also served as head of the consulate in Germany from 1930 to 1934, during the rise of the Nazi Party.

Hugh Robert Wilson was a member of the United States Foreign Service who headed the United States mission to Switzerland for ten years beginning in 1927. He became Assistant Secretary of State in 1937 and served for several months in 1938 as Ambassador to Germany.