Corwin H. Hansch (1918-2011) was a Professor of Chemistry at Pomona College from 1946 until 1988, and founder of Quantitative Structure Activity Relationships (QSAR). Hansch received his B.S. in Chemistry from the University of Illinois and his Ph.D. from New York University. Following a brief period of postdoctoral work at the University of Illinois, Chicago, Hansch worked on the Manhattan Project at the University of Chicago and later at DuPont Nemours in Richland, Washington. After World War II ended, he accepted a research chemist position at DuPont, but left shortly thereafter, coming to Pomona College in 1946. After arriving at Pomona, he began work on the correlation of biological activity with chemical structure, which led to the development of his seminal work in QSAR. For his work in the field, Corwin Hansch came to be recognized as the “father of computer-assisted molecular design,” and the methodology that he spawned is now utilized in most pharmaceutical and biotechnology companies.