2025 Wayne State University
2024 University of Wisconsin – Madison
2023 Purdue University
2022 Ohio State University
2019 University of Notre Dame
2018 University of Chicago
2017 Michigan State University
2016 University of Pittsburgh
2015 University of Michigan
2014 Northwestern University
2013 University of Illinois Urbana-Champaign
2012 University of Wisconsin – Madison
2011 University of Notre Dame
2010 Purdue University
2009 Southern Illinois University
2008 University of Michigan
2007 Indiana University
2006 Ohio State University
2005 University of Missouri, Columbia
2004 Michigan State University
2003 Iowa State University
2001 University of Minnesota
2000 University of Iowa
1999 University of Notre Dame
1998 Purdue University
1997 University of Illinois Urbana-Champaign
1996 Indiana U.-Purdue U. Indianapolis
1995 Northwestern University
1994 University of Missouri, Columbia
1993 Southern Illinois University
1992 Michigan State University
1991 Northern Illinois University
1990 University of Wisconsin – Madison
1989 Indiana U.-Purdue U. Indianapolis
1988 Argonne National Laboratory
1987 University of Pittsburgh
1986 Indiana University at Bloomington
1985 Marquette University
1984 Southern Illinois University
1983 Northwestern University
1982 Michigan State University
1981 University of Chicago
1980 University of Minnesota
1979 Purdue University
1978 Battelle’s Columbus Laboratories
1977 Argonne National Laboratory
1976 Northern Illinois University
1975 University of Wisconsin – Madison
1974 University of Kentucky, Lexington
1972 Michigan State University
1971 Indiana University at Bloomington
1970 Iowa State University
1969 University of Minnesota
1968 University of Wisconsin – Madison
1967 University of Chicago