Illingworth, Marjorie Louise, Associate Professor of Developmental Studies, Emerita. Iowa State University 65, BS; University of Alaska Fairbanks 94, MEd. (1990–2010).
Illingworth, Ronald D., Professor of English and Developmental Education, Emeritus. Iowa State University 64, BS; University of Nebraska Omaha 80, MA; Appalachian State University 91, EdSpec. (1986–2010).
Irish, Joel D., Professor of Anthropology, Emeritus. Mankato State University 80, BS; 84, MS; Arizona State University 93, PhD. (1998–2013).
Irving, Laurence, Professor of Zoophysiology, Emeritus. Bowdoin College 16, BA; Harvard University 17, MA; Stanford University 24, PhD; University of Oslo 56, M.D. (Hon); Bowdoin College 59, (Hon); University of Alaska Fairbanks 68, ScD (Hon). (1962–1975). Deceased.