Prominent structural engineer and professor Stanley D. Lindsey has been called a genius, an innovator and an inspiration. He died on July 12 of a massive heart attack on his horse farm in Bluffton, S.C. He was 75.

Not long after starting his eponymous firm in Nashville, Tenn., in 1966, Lindsey became known as a pioneer in the use of computers for the analysis and design of structures. Stanley D. Lindsey and Associates Ltd., which for years wrote most of its own software, was one of the first engineers to integrate computer-aided design with drafting.