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Truman S. Gray PhD '30

MIT News Office

Memorial services will be held today for Professor Emeritus of Engineering Electronics Truman S. Gray PhD '30, a pioneer in the field of electronic instrumentation, measurement and control, who died Saturday at Mt. Auburn Hospital. Gray had suffered a heart attack a few days earlier at his home in Lexington. He was 86.

Services will be held at 1 p.m. in the Church of Our Redeemer in Lexington. Burial will be in Lexington's Westview Cemetery.

Gray began his teaching career at MIT in 1927 as a research assistant in electrical engineering and became a vital force in what is now the Department of Electrical Engineering and Computer Science.

Gray was born in 1906 in Indiana and grew up in Austin, Texas. He earned bachelors degrees in electrical engineering and physics at the University of Texas, where his father was a professor. At MIT, he received a master of science degree in electrical engineering in 1928 and a doctor of science degree in 1930. The late Vannevar Bush supervised his doctoral thesis. Gray joined the faculty in 1935.

Gray taught the premier departmental course in electronic instrumentation, and continued to do so even after his official retirement. He also headed the department's Graduate Office for many years and wrote Applied Electronics, which became an authoritative text in the field and was translated into Japanese and Spanish.

During a leave from MIT in 1947-48, Gray took charge of designing and developing reactor instrumentation at the newly established Brookhaven National Laboratory. He also served as an expert witness in many legal cases.

Gray maintained a strong love for music, and he played the clarinet for many years with concert bands in Concord and Lexington. He especially enjoyed Dixieland, and in 1957 became a founding member of the Tabor Hill Dixieland Jazz Band. Just last week he and fellow band member Stephen H. Crandall PhD '46, also an emeritus professor at MIT, were discussing an upcoming engagement. He was also an accomplished amateur silversmith and glassblower.

Gray, a Lexington resident for 57 years, is survived by his wife, Isabel Crockford Gray, a sister, Margaret Shepherd of Texas, and two neices.