Kaysen, Carl; Matthews, Mildred Shapley; Oppenheimer, J. Robert, 1904-1967; Spitzer, Lyman, 1914-1997; Strömgren, Bengt, 1908-1987(Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA, 1956-1982)
Breit, Gregory, 1899-1981; Dyson, Freeman J.; Kaysen, Carl(Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA, 1967-1973)