Nelson J. Leonard Distinguished Lecturers
Previous Lecturers
| 1987 | James P. Collman | Stanford University |
| 1988 | Sir Derek H. R. Barton | Texas A&M University |
| 1989 | Christopher T. Walsh | Harvard Medical School |
| 1990 | Donald J. Cram | University of California, Los Angeles |
| 1991 | Richard R. Ernst | Eidgenoessische Technishe Hochschule, Zürich |
| 1992 | Thomas A. Steitz | Yale University |
| 1993 | K. Barry Sharpless | Scripps Research Institute |
| 1994 | Rudolph A. Marcus | California Institute of Technology |
| 1995 | Phillip A. Sharp | Massachusetts Institute of Technology |
| 1996 | Martin Rodbell | National Institute for Environmental Health Sciences |
| 1997 | John D. Roberts | California Institute of Technology |
| Sidney M. Hecht | University of Virginia | |
| Peter G. Schultz | University of California, Berkeley | |
| Albert Eschenmoser | Eidgenoessische Technische Hochschule, Zürich | |
| 1998 | F. Sherwood Rowland | University of California, Irvine |
| 1999 | Jean-Michel Savéant | Centre National de la Recherche Scientifique |
| 2000 | David A. Tirrell | California Institute of Technology |
| 2001 | Alastair Ian Scott | Texas A&M University |
| 2002 | Amos B. Smith III | University of Pennsylvania |
| 2003 | Lawrence J. Marnett | Vanderbilt University |
| 2004 | Robert S. Langer | Massachusetts Institute of Technology |
| 2005 | Thomas R. Cech | Howard Hughes Medical Institute and University of Colorado at Boulder |
