HOWARD HUGHES MEDICAL INSTITUTE 
TRUSTEES 
SEPTEMBER 1, 1991-AUGUST 31, 1992 
Alexander G. Bearn, M.D. 
Adjunct Professor 
The Rockefeller University 
^Professor Emeritus of Medicine 
Cornell University Medical College 
Former Senior Vice President 
Merck Sharp & Dohme, International 
Helen K. Copley 
Chairman of the Corporation 
and Chief Executive Officer 
The Copley Press, Inc. 
Frank William Gay 
Former President 
and Chief Executive Officer 
SUMMA Corporation 
James H. Gilliam, Jr., Esq. 
Executive Vice President 
Beneficial Corporation 
Hanna H. Gray, Ph.D. 
President 
The University of Chicago 
William R. Lummis, Esq. 
Chairman of the Board of Directors 
SUMMA Corporation 
Irving S. Shapiro, Esq., Chairman 
Of Counsel 
Skadden, Arps, Slate, Meagher & Flom 
Former Chairman and Chief Executive Officer 
E.I. du Pont de Nemours and Company 
George W. Thorn, M.D., Chairman Emeritus 
Professor Emeritus 
Harvard Medical School 
James D. Wolfensohn 
President 
James D. Wolfensohn, Incorporated 
xiv 
