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Oscar J. Craig

July 1895 - October 1908

Clyde A. Duniway

October 1908 - September 1912

Edwin B. Craighead

September 1912 - October 1915

Edward O. Sisson

September 1917 - August 1921

Charles H. Clapp

September 1921 - October 1935

George F. Simmons

January 1936 - April 1941

Ernest O. Melby

October 1941 - August 1945

James A. McCain

September 1945 - July 1950

Carl McFarland

March 1951 - May 1958

Harry K. Newburn

July 1959 - September 1963

Robert Johns

September 1963 - August 1966

Robert T. Pantzer

December 1966 - June 1974

Richard C. Bowers

July 1974 - June 1981

Neil S. Bucklew

July 1981 - June 1986

James V. Koch

September 1986 - June 1990

George M. Dennison

August 1990 - October 2010

Royce C. Engstrom

October 2010 - December 2016

Sheila M. Stearns

December 2016 - January 2018