William (Bill) Graham Houlton, 89, passed away peacefully at his home in Keystone on Feb. 8, surrounded by his family. Bill was born in Denver on June 9, 1923. He attended East High School and graduated from the University of Colorado in Boulder with a degree in aeronautical engineering. He was a fighter pilot and a flight instructor during WWII, and had a varied and colorful work life, engaging in biomedical engineering at Cobe Laboratories, aerospace engineering at Martin Marietta Corporation, and manufacturing at Component Service Company, selling early era solid-state amplifiers to rock bands such as Three Dog Night, Mitch Ryder and Frigid Pink. Always dedicated to fitness, he learned to ski at age 68 and skied 100 days during his 80th year. He is survived by his wife, Joan Manley Houlton; William (Gray), John, Jeffrey and Dana Houlton, children of Marilyn Nelson Houlton, who died in 1990. He also leaves 10 grandchildren and one great-grandchild. After their marriage in 1991, Joan and Bill settled in Keystone and participated in Summit County music and arts events. They were early contributors to the Summit Medical Foundation and Flight for Life and were among the founding sponsors of the Snake River Chamber Players. Bill enjoyed classical music from his earliest years and with his wife supported the National Repertory Orchestra of Breckenridge and the Colorado Symphony Orchestra of Denver. His family requests your contribution to those orchestras in lieu of flowers.