Stuart C. Clark ’58 died of natural causes in Sunrise Beach, Missouri, on December 31, 2021. Stu was a brother at Delta Upsilon and was active on the ski patrol, in the DOC, and with Winter Carnival. After earning his B.E. from Thayer in 1959, Stu worked as a professional aerospace engineer at MIT, Telledyne, TRW, Hughes Aircraft, and Jet Propulsion Labs in Pasadena, California. He worked on the Saturn mission from its inception and won a JPL Technical Excellence Award. In 1976 he earned an M.B.A. degree at UCLA. Stu and his wife, Carolyn, who predeceased him, retired to Lake of the Ozarks, Missouri. He is survived by three daughters and one son.