A Reference Companion to Dylan Thomas, by James A. Davies, is an extremely helpful resource which includes a biography, discussion of each book, analysis of Thomas's techniques, and discussion of the critical reaction to his work. It was published by Greenwood Press in 1998.

Thomas is frequently mentioned in Anglo-Welsh Literature: An Illustrated History, by Roland Mathias, a 1986 publication of Poetry Wales Press that presents an overview of Welsh writers who wrote in English.

Although David Holbrook, the author of Llar eg-gub Revisited, a 1962 publication by Cedric Chivies Press, noted in later editions of this work that his criticism of Thomas was too hostile, his negative comments on "The Force" remain interesting.

In 1962, Noonday Press published William York   Tindall's   Reader's   Guide   to   Dylan Thomas, which provides one of the best overall...