In the postwar years, Lilly remained active in company business as it expanded overseas with the construction of a new plant in Basingstoke, England, and supporting research on new drugs. He also reorganized the company, appointing non-family members to top management positions and began the transition to non-family management of the company. Lilly was president of the company from 1932 to 1947. Following the death of his father in 1948, Lilly served as chairman of the board from 1948 to 1961, while his brother, J. K. Lilly Jr., was the company's president, and from 1966 to 1969, when Eugene N. Beesley was elected president. Lilly was honorary chairman from 1961 to 1966 and from 1969 to 1977.