Flexner, Abraham, 1866-1959; Meritt, Benjamin Dean, 1899-1989(Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA, 1937-1939)
Aydelotte, Frank, 1880-1956; Flexner, Abraham, 1866-1959; Stewart, Walter W., 1885-1958(Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA, 1932-1945)