Aberg, Dr. Ewert (1949–1954, 17 letters) Aberconway, Lord (1950–1952, 8 letters) Abramovice, Norman (1953, 1 letter) Adams, Ansel (1948, 1 letter) Adams, Jack D. (1954, 2 letters) Adams, Phillip A. (1950, 6 letters) de Alba, Jorge (1956, 2 letters) Albareda, Dr. Jose Maria (1947–1956, 25 letters) Albritton, Errett C., M.D. (1952, 1 letter) Alcaraz Mira, Dr. Enrique (1957, 1 letter) Allen, Lloyd M. (1953–1957, 12 letters) Allington, H.V., M. D. (1956, 2 letters) Almqvist & Wiksells Printing Office (1955, 3 letters) Amengual, Dr. Antonio Gramundi (1949–1950, 2 letters) American Geographical Society (1951, 1 letter) American Trust Company (1951–1952. 3 letters) Ames, Oakes (1932, 1 letter) Amstutz, Mrs. Erika (1957, 3 letters) Anchorena, Emilio (1953, 1 letter) Anderson, E.L. (1948, 2 letters) Anderson, Gilbert (1954, 1 letter) Anderson, H.I. (1952, 1 letter) Anderson, May B. (1957, 2 letters) Anderson, Ruth C. (1949–1950, 5 letters)