Peabody, Endicott (1953–1954, 3 letters) Peace, O. (1953, 1 letter) de Pearson, Elsa Shaw (1948, 1 letter) Pearson, Dr. Jay F.W. (1953, 2 letters) Pearson, Ricardo M. (1949, 3 letters) Pennell, Harry R. (1957, 10 letters) Perez, Dr. Ramon A. (1949, 1 letter) Perker, Mrs. Walter G. (1949, 1 letter) Perry, Viola (1957, 2 letters) Persson, Dr. Herman (1956, 2 letters) Pesman, M. Walter (1955, 1 letter) Peterson, H.W. (1949, 1 letter) Pettitt, George A. (1933–1948, 2 letters) Pfister, Dr. Augusto (1958–1959, 3 letters) Piser, Harold Palmer (1952, 1 letter) Platts, Mrs. Eileen (1949, 3 letters) Pleas, Mrs. F.W. (1951, 1 letter) Ploss, R.C. (1954–1957, 35 letters)