Personal life He married the former Deborah Taintor, and they had two daughters. Toll died on July 15, 2011, of respiratory failure at Fox Hill Assisted Living in Bethesda, Maryland. References External links Biography on the American Institute of Physics website John S. Toll papers at the University of Maryland Libraries 1923 births 2011 deaths Particle physicists University of Maryland, College Park faculty Chancellors of the University System of Maryland Presidents of Washington College Yale University alumni Presidents of Stony Brook University Fellows of the American Physical Society