After he retired from Bell Labs, Brattain moved back to Walla Walla to teach at his alma mater, Whitman College. He worked on biophysics, taught a physics course for non-science majors, and listened to the music being played on campus so loudly thanks to his invention. "The only regret I have about the transistor is its use for rock and roll," he said more than once. He died of Alzheimer's disease at the age of 85 on October 13, 1987.
-- Robert Brattain, interview for "Transistorized!"
-- Michael Riordan, interview for "Transistorized!"
-- John Pierce, interview for "Transistorized!"