US Senator Edmund Muskie signed letter. 8 x 11 inches Edmund Sixtus Muskie (March 28, 1914 March 26, 1996) was an American statesman and political leader who served as the 58th United States Secretary of State under President Jimmy Carter, a United States Senator from Maine from 1959 to 1980, the 64th Governor of Maine from 1955 to 1959, and a member of the Maine House of Representatives from 1946 to 1951. He was the Democratic Party's candidate for Vice President of the United States in the 1968 presidential election, alongside Hubert Humphrey.