Donald I. MacLean was born in 1929 in Norwalk, Connecticut. MacLean became a member of the Society of Jesus in 1947 and was ordained as a priest in 1961. After receiving a Ph. D. in physical chemistry from Catholic University of America, Father MacLean began serving in various positions at Jesuit universities, including the presidency of Saint Joseph's College (later Saint Joseph's University) from 1976-1986. He died in Weston, Massachusetts, in November 1989.
From the description of Rev. Donald I. MacLean, S.J., papers, 1943-1989. (Saint Joseph's University - Francis A. Drexel Library). WorldCat record id: 52447357