Association for the Advancement of Science and the Instrument Society of America, president of the American Automatic Control Council (AACC) in 1962 and 1963, and recipient of the AACC Bellman Heritage Award in 1983. Case Western Reserve University named him a Case Centennial Scholar in 1980, and he was an IEEE Centennial Medalist in 1984. In 1990, he was awarded the Rufus Oldenberger Medal of the American Society of Mechanical Engineers and IEEE Richard Emberson Award for “distinguished service to the technical objectives of the IEEE.” In 1988, Dr. Chestnut and his family endowed the IFAC Control Engineering Textbook Prize, now known as the Harold Chestnut IFAC Control Engineering Textbook Prize, which is awarded triennially.
Hal began visiting at Lake Luzerne, New York, at age 5 and continued to visit the Adirondacks throughout his life. He enjoyed family gatherings, and sailing his Sunfish, and he was a lifelong swimmer. He also skied and played tennis. Many of these activities were shared with his family. Hal was a gardener who cultivated lilies and roses especially. He served as president of his local YMCA and was active in the Boy Scouts of America, attaining the rank of Eagle Scout. He served as president of his local Parent-Teacher Association and the First Unitarian Society of Schenectady, New York. He served on the World Federalist Board of Directors and a local citizens committee for public schools.
Hal had a special interest in keeping in touch with colleagues throughout the world, even after his own formal leadership roles were finished. He was a voracious reader, and it was not unusual for a friend in a leadership position in some professional organization to receive a call from Hal to discuss an issue that had appeared in a recent society newsletter or meeting minutes. His involvement in his profession was truly a lifetime commitment.
Hal is survived by his wife of 57 years, Erma Ruth Callaway Chestnut. His other immediate survivors include son Peter Callaway Chestnut, wife Elizabeth Akiya Chestnut, and daughter Caitilin Asako Chestnut; son Harold Thomas Chestnut, wife Laura Ross Chestnut, and daughters Whitney