Stadtman, Verne A. (1955, 1 letter) Standley, Dr. Paul C. (1944, 1 letter) Stanfield, Dr. J. Fischer (1957, 1 letter) St. Aubyn, Mrs. C.R. (1949, 1 letter) Stebbins, Dr. G. Ledyard Jr. (1949–1951, 7 letters) Stebbins, Robert C. (1955–1956, 2 letters) Stechert-Hafner, Inc. (1950–1957, 5 letters) Steever, Walter W. (1952–1953, 2 letters) Stein, Janet (1951, 2 letters) Steinberg, Dr. Robert A. (1956–1959, 32 letters) Stepani, William (1949, 2 letters) Stephenson, J.W. (1959, 2 letters) Stern, F.C. (1951, 1 letter) Stern, Mrs. Sigmund (1948–1951, 5 letters) Stevens, George E. (1946, 6 letters) Stevens, Harley C. (1957, 4 letters) Stevens, Harry E. (1931–1932, 7 letters) Stevens, Marian (1952, 1 letter)