Professional
Professor, Department of History, California State University, Fresno, 1973-2002. Chairman, 1979-1982. Professor Emeritus 2002.
Associate Professor, Department of History, California State University, Fresno, 1969-73.
Assistant Professor, Department of History, California State University, Fresno, 1965-69.
Visiting Professor, Department of History, Pacific Lutheran University, Tacoma, Washington, Summers 1974-1976.