From reviews of The Cornell Yeats series:

"For students of Yeats the whole series is bound to become an essential reference source and a stimulus to important critical re-readings of Yeats's major works. In a wider context, the series will also provide an extraordinary and perhaps unique insight into the creative process of a great artists."—Irish Literary Supplement

"I consider the Cornell Yeats one of the most important scholarly projects of our time."—A. Walton Litz, Princeton University, coeditor of The Collected Poems of William Carols Williams and Personae: The Shorter Poems of Ezra Pound

"The most ambitious of the many important projects in current studies of Yeats and perhaps of modern poetry generally.... The list of both general and series editors, as well as prospective preparers of individual volumes, reads like a Who's Who of Yeats textual studies in North America. Further, the project carries the blessing of Yeats's heirs and bespeaks an ongoing commitment from a major university press.... The series will inevitably engender critical studies based on a more solid footing than those of any other modern poet.... Its volumes will be consulted long after gyres of currently fashionable theory have run on."—Yeats Annual (1983)

The ancient story of the ill-fated Deirdre and the Sons of Usnach has a special place in Irish literature—as a tale prefatory to The Táin—and a durable hold on the Irish imagination. Building on the many earlier literary retellings of the story, W. B. Yeats deliberately frames his 1906 play as an extension of the legend, writing a new death-tale for Deirdre that is also a personal statement about love, death, and the making of art. This edition of the manuscripts of Deirdre presents the transcription of work from three substantially different versions of the play through its first performance, together with post-performance revisions that throw light on what Yeats learned from producing the play on stage.

Deirdre is an important transitional play in Yeats's career as a playwright. The manuscripts included here show him extending the limits of the conventionally staged play and initiating the development of some of the features of the dance plays (the use of chorus and song, the unity of metaphor, the compression of language). Most intriguing, however, is the view they offer of the play as it was first performed at the Abbey Theatre. The Cornell Yeats edition of Deirdre features a series of sketches for staging the play, one of a very few pieces of evidence for Yeats's production plans for any of his early plays.