Jan. 1, 2011-June 30, 2014
Tom Higgins
Feb. 4, 2008-Dec. 31, 2010
Dale A. Fisseler, P.E.
Nov. 2, 2004-Feb. 4, 2008
Charles Boswell
March 26, 2001-Aug. 24, 2004
Gary Jackson
July 7, 1992-Jan. 1, 2001
Robert Terrell
Oct. 7, 1989-April 4, 1992
David A. Ivory
March 3, 1985-Oct. 6, 1989
Douglas Harman
Dec. 1, 1984-March 1, 1985
Vernell Sturns
Aug. 1, 1978-Nov. 30, 1984
Robert L. Herchert
Feb. 1, 1978-Aug. 1, 1978
Morris C. Matson
April 12, 1971-Feb. 3, 1978
Roger N. Line
May 1, 1967-March 5, 1971
Howard D. McMahan
Feb. 1, 1963-May 1, 1967
J. L. Brownlee
June 15, 1959-Feb. 1, 1963
L. P. Cookingham
Jan. 1, 1956-April 24, 1959
J. Frank Davis
July 1, 1947-March 15, 1955
W. O. Jones
Aug. 1, 1938-June 1, 1946
S. H. Bothwell
Aug. 1, 1937-Aug. 1, 1938
D. L. Lewis
Served six-week terms between April 8 and Aug. 1, 1937
S. B. Edwards
L. W. Hoelscher
June 24, 1931-April 8, 1937
G. D. Fairtrace
May 5, 1925-June 24, 1931
O. E. Carr