1 Kenneth B. Watts 1978 – 1979
2 Arthur W. Peterson 1980
3 James E. Mantz 1981
4 Leroy A. Harper 1982
5 Clarence L. Atwood 1983
6 Frank S. Duren 1984
7 Carl Kalinoswki 1985 – 1986
8 Frederick P. Stein 1987
9 Frederick S. Schilling 1988
10 Allen C. Spencer 1989, 1991
11 Martin E. Ryan 1990
12 Glenn H. Hughes 1991 – 1992, 1999, 2004, 2007 – 2008
13 Walter L. Atwood 1993, 2000, 2009, 2013
14 Joseph A. Brenes 1994, 1997
15 C. Marc Raad 1995
16 George VanDerPioeg 1996
17 Winfield Tarbox 1998, 2001
18 Stephen Straut-Esden 2002
19 Frederick B. Storms 2003
20 Charles W. Hansen 2005
21 George Awwad 2006
22 Thomas Mallory 2010
23 Robert A. Brenes 2011, 2016 – 2017
24 Kenneth M. Coman 2012, 2014
25 Christian W. Markkanen 2015
26 Lawrence F. Barone 2018
27 Craig P. Dumont 2019 –