English historian best known for collecting the correspondences and papers of influential figures in the scientific community. He was also the first curator of the Whipple Museum of the History of Science, in Cambridge.
He served in World War II and graduated from Christ's College in Cambridge.
He served as the director of the Wellcome Trust, which funds university courses, for four years.
He married Marie Boas in 1959.
He collected the unpublished papers and correspondences of Sir Isaac Newton.