Regents Professor Emeritus 1981-2021
andrew.mort@okstate.edu

Regents Professor Emeritus 1981-2013
changan.yu@okstate.edu

Regents Professor Emeritus 1973-2004
Interim Department Head 2001-2004
margaretessenberg@okstate.com

Professor Emeritus 1973-2003
richard.essenberg@okstate.edu

Regents Professor Emeritus 1975-2015
ulrich.melcher@okstate.edu

Professor Emeritus 1978-2010
sharon.ford@okstate.edu

Professor Emeritus 1962-1993
rgholson@swbell.net

Professor Emeritus 2005-2023
peter.r.hoyt@okstate.edu

 Professor Emeritus 1997-2023 pat.rayas_duarte@okstate.edu

Professor Emeritus  1999-2024
jose.soulages@okstate.edu 

Professor Emeritus  1991-2024
steven.hartson@okstate.edu 

Roger E. Koeppe
1922-2009
Professor Emeritus 1959-1990
Department Head 1963-1990

George Waller
1956-1987
Professor Emeritus

Franklin Leach
Professor Emeritus 1959-1998

Eldon C. Nelson
Professor Emeritus 1963-2004

Earl D. Mitchell
Professor Emeritus 1969-2007
Interim Department Head 2004-2007

Linda Yu
Professor Emeritus 1981-2013