Lewis I. Minor
March 1981 - Dec 1987

Dewitt Lott
July 1980 - Feb 1981

Alvin Sullivan
  Nov 1979 - June 1980

Horace W. Dennis
  Dec 1976 - Sept 1979

W.B. Garlen
March 1976 - Nov 1976

Homer L. Salzman
Nov 1974 - Oct 1975