Eleanor Roosevelt, Harry S. Truman, Steve Neal (2002). “Eleanor and Harry: The Correspondence of Eleanor Roosevelt and Harry S. Truman”, p.277, Simon and Schuster
George Bernard Shaw (2015). “The Collected Plays of George Bernard Shaw (Illustrated): Including Renowned Titles like Pygmalion, Mrs. Warren’s Profession, Candida, Arms and The Man, Man and Superman, The Inca Of Perusalem, Macbeth Skit, Caesar and Cleopatra, Androcles And The Lion”, p.1375, e-artnow