1. Ernest Rhys, “W. B. Yeats: Early Recollections,” in Interviews and Recollections, vol. 1, ed. E. H. Mikhail (London: Macmillan, 1977)
2. W. H. Auden, “Psychology and Criticism,” in The Complete Prose of W. H. Auden. Volume 1: Prose and Travel Books in Prose and Verse, 1926–1938, ed. Edward Mendelson (Princeton: Princeton University Press, 1997)
3. Max Weber, “Politics as a Vocation,” in From Max Weber: Essays in Sociology, trans. and eds. H. H. Gerth and C. Wright Mills, new edn. (Abingdon: Routledge, 1991)
4. Ronald Schuchard, The Last Minstrels: Yeats and the Revival of the Bardic Arts (Oxford: Oxford University Press, 2008)
5. Emily C. Bloom, “W. B. Yeats’s Radiogenic Poetry,” in The Wireless Past: Anglo-Irish Writers and the BBC, 1931–1968 (Oxford: Oxford University Press, 2016)