Foster, R. F.W. B. Yeats: A Life. Oxford University Press, 1997. This first volume of a projected two-volume biography covers Yeats's life from childhood to World War I.
Howes, Marjorie.Yeats's Nations: Gender, Class, and Irishness. Cambridge University Press, 1997. Explores how Yeats's complicated political and social values are reflected in his writings.