James F. Leathrum *63

James died April 11, 2026, in Chesapeake, Va. 

Born Dec. 24, 1937, James earned a bachelor of science degree in chemical engineering from the University of Delaware in 1959 and a Ph.D. in chemical engineering from Princeton in 1963. 

James served in the Army, performing computer-based ballistic calculations. The experience sparked a lifelong career in computing and software. After completing his military service, he worked at Union Carbide before transitioning to academia. 

James was a professor of computer science and statistics at the University of Delaware, where he served as department chair and played a key role in establishing the department. He later joined Clemson University as a professor of electrical and computer engineering, helping to build a new program in computer engineering. His research focused primarily on software to support the military and compiler design. 

After retiring from academia, James founded Oakleaf Systems, a software design consulting company. 

Having a child with Down Syndrome, James and his wife, Barbara, were active in Down Syndrome advocacy locally, at the state level, and nationally with the National Down Syndrome Conference.  

Predeceased by Barbara, James is survived by his sons James Jr. ’84, Thomas, and Roger; five grandchildren; and one great-grandson.   

Graduate memorials are prepared by the APGA.