THE MASK OF CTHULHU. Jersey: Neville Spearman, . Octavo, boards. First British edition. Text offset from the 1958 Arkham House edition. Bleiler, The Guide to Supernatural Fiction 521. Tymn (ed), Horror Literature 4-94. A fine copy in fine dust jacket. (#164188).
"First published in Great Britain in 1974 ..." on copyright page.