Sprague (August 2, 1900 – September 27, 1991) was the son of Frank J.
Sprague and Harriet Sprague.
Sprague founded Sprague Electric (originally Sprague Specialties Company), Quincy, MA in 1926, and served as president from 1926-1953 and chief executive from 1953-1971.
He invented the tone control for radio and the paper capacitor that launched his business.
Sprague was appointed by President Eisenhower to serve as Undersecretary to the Air Force in 1953.
He first accepted, then declined the position, due to financial difficulties.