- University of Minnesota (Minneapolis, Minn.), 1947 (1)
- University of Minnesota (Minneapolis, Minn.), 1948 (1)
- University of Minnesota (Minneapolis, Minn.), 1949 (1)
- University of Minnesota (Minneapolis, Minn.), 1950 (1)
- University of Minnesota, Institute for Advanced Study (Minneapolis, Minnesota), 2006 (1)
- University of Minnesota, Institute for Advanced Study (Minneapolis, Minnesota), 2008 (1)
- University of Minnesota, Institute for Advanced Study;University of Minnesota 2004 (1)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 1995 (1)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 1996 (2)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2002 (1)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2003 (2)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2004 (3)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2005 (3)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2006 (10)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2007 (24)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2008 (21)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2009 (46)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2010 (33)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2011 (65)
- University of Minnesota. Institute for Advanced Study (Minneapolis, Minnesota), 2012 (44)
