1920s
Hoover, Herbert. "Inaugural Address." 4 Mar. 1929, East Portico, US Capitol Building, Washington, DC, USA.
Chekhov, Anton. Diary entry. c. 1885.
Chekhov, Anton. The Notebooks of Anton Chekhov and Reminiscences of Chekhov, translated by S. S. Koteliansky and Leonard Woolf. University Press of the Pacific, 2002.
Hesse, Hermann. Siddhartha: Eine Indische Dichtung [Siddhartha: An Indian Poetry]. S. Fischer Verlag, 1922.
Hesse, Hermann. Siddhartha, translated by Joachim Neugroschel. Penguin Classics, 2002.
Hesse, Hermann. Siddhartha: Eine Indische Dichtung [Siddhartha: An Indian Poetry]. S. Fischer Verlag, 1922.
Hesse, Hermann. Siddhartha, translated by Joachim Neugroschel. Penguin Classics, 2002.
Milne, A. A. Winnie-the-Pooh. Methuen/Dutton, 1926.
Milne, A. A. Winnie-the-Pooh. Dutton Books for Young Readers, 2017.
Du Bois, William Edward Burghardt. "The Souls of White Folk." Darkwater: Voices from Within the Veil. Harcourt, Brace And Howe, 1920.
Du Bois, William Edward Burghardt. "The Souls of White Folk." Darkwater: Voices from Within the Veil, edited by Henry Louis Gates, Jr. Oxford University Press, 2014.
Graves, Robert. Good-Bye to All That. Jonathan Cape, 1929.
Hoover, Herbert. "Inaugural Address." 4 Mar. 1929, East Portico, US Capitol Building, Washington, DC, USA.
Coolidge, Calvin. "The Supports of Civilization." Amherst College Alumni Dinner. 27 Nov. 1920, New York, NY, USA.
Coolidge, Calvin. "The Supports of Civilization." The Price of Freedom: Speeches and Addresses. Charles Scribner's Sons, 1924.
Hesse, Hermann. Siddhartha: Eine Indische Dichtung [Siddhartha: An Indian Poetry]. S. Fischer Verlag, 1922.
Hesse, Hermann. Siddhartha, translated by Joachim Neugroschel. Penguin Classics, 2002.
Harding, William G. "Inaugural Address." 4 Mar. 1921, East Portico, US Capitol Building, Washington, DC, USA.
Russell, Bertrand. "On the Value of Skepticism." Sceptical Essays. George Allen and Unwin Ltd./W. W. Norton & Company, 1928.
Rilke, Rainer Maria. Letter to Franz Kappus. 14 May 1904.
Rilke, Rainer Maria. Letters to a Young Poet, translated by Charlie Louth. Penguin Classics, 2014.
Keynes, John Maynard. The End of Laissez-Faire. Hogarth Press, 1926, ch. 1.
Keynes, John Maynard. "The End of Laissaz-faire." The Essential Keynes. Penguin, edited by Robert Skidelsky, 2016, ch. 1.
Trotsky, Leon. Литература и революция [Literature and Revolution]. Soviet Government, 1924.
Trotsky, Leon. Literature and Revolution, edited by William Keach. Haymarket Books, 2005.
Keller, Helen. We Bereaved. Leslie Fulenwider, 1929.
Brecht, Bertolt. Die Dreigroschenoper [The Threepenny Opera]. 31 Aug. 1928, Theater am Schiffbauerdamm, Berlin, Germany, act 2, sc. 6.
Brecht, Bertolt. The Threepenny Opera. Grove Press, 1994, act 2, sc. 6.
Mann, Thomas. Der Zauberberg [The Magic Mountain]. S. Fischer Verlag, 1924, ch. 6.
Mann, Thomas. The Magic Mountain. Everyman's Library, 2005, ch. 6.