1980s
September 11 1987
April 8 1991
Donnelly, Gerard T.
March 4 1991
1998
Hedborn Jr., Edward A.
February 16 1993
Nyberg, Dennis
2017
The Morton Arboretum
May 29 1990
van der Linden, Peter J.
April 19 2003
Armstrong, Patricia K.
March 1976
Stickney, William S.
March 24 1976
Coulter, Ronald M.
March 1973