In 1948, he entered Southern Methodist University, where he studied engineering and geology. Jimmie was a member of the famous SMU Football Team of the early 1950's. After graduation, he planned to enter SMU Law School, but his life changed dramatically. On June 14, 1952, he married Dorothy Kuntz. They went to work in Crane, Texas, where he and his father had acquired three small rundown oil leases.Jimmie and his father formed a company named Thompson Petroleum Corporation. He had served on the Board of Trustees for SMU, the board of the Howard Payne University Academy of Freedom, and the board of SMU's Maguire Institute of Oil and Gas. And was currently on the executive board of SMU Dedman School of Law. He is survived by his wife, Dorothy of 58 years of marriage; 2 daughters, Christy Thompson and Linda Gordon; and son-in-law Gary Gordon; brother-in-law, Louis Kuntz and his wife Barbara of Fullerton, California