Essays, etc.

C. S. Lewis wrote this brief tribute to Eddison (amazon.com registration required), collected in On Stories and Other Essays.

"The Sign of the Worm: Images of Death and Immortality in the Fiction of E.R. Eddison". In: Death and the Serpent, hg. C.B. Yoke, D.M. Hassler. Contributions to the Study of Science Fiction and Fantasy, No. 13. Westport, Ct., 1985. S. 91-102.

"From Elfland to Poughkeepsie" by Ursula K. Leguin

Letter #199, Letters of J.R.R. Tolkien