Cox, C.B., editor, Dylan Thomas: A Collection of Essays, Englewood Cliffs, NJ: Prentice Hall Inc., 1966.

Contains several critical essays written while Thomas was still alive or soon after his death, including poet Karl Shapiro's reflections on Thomas's place in our culture from a perspective of a peer who knew him. Also particularly significant is John Ackerman's "The Welsh Background," which highlights some thin social strains that can be found in Thomas's work.

Moynihan, William, The Craft and Art of Dylan Thomas, Ithaca, NY: Cornell University Press, 1966.

A very detailed analysis focused closely on Thomas's writing in the order that it was published and the theoretical basis behind each work.

Tindall, William York, A Reader's Guide to Dylan Thomas, New York: Octagon Books, 1962.

Considered by critics to be a key study of Thomas, redefining the poet's reputation by giving serious consideration to his technical ability and...