1971); A. Norman Jeffares and A.S. Knowland, mentary on the Collected Plays of W.B. Yeats (1975); A. Norman Jeffares (ed.), W.B. Yeats: The Critical Heritage (1977); Richard F. Peterson, William Butler Yeats (1982); A. Norman Jeffares, A mentary on the Poems of W.B. Yeats (1983); Jahan Ramazini, Yeats & the Poetry of Death (1990); Leonard Orr (ed.), Yeats and Postmodernism (1991); and Marjorie Howes, Yeats's Nations: Gender, Class, and Irishness (1996). Bibliographies include Allan Wade, A Bibliography of the Writings of W.B. Yeats, 3rd ed. rev. and ed. by Russell K. Alspach (1968); and K.P.S. Jochum, W.B. Yeats: A Classified Bibliography of Criticism, 2nd ed., rev. and enlarged (1990). The poet's correspondence is available in John Kelly (ed.), The Collected Letters of W.B. Yeats (1986–).