Zebra Books, 2nd printing 1977. First novel in the "Dream Lords" series, which also includes "Lord of Nightmares" (1975) and "Bane of Nightmares" (1976). Cole is a British author of Lovecraftian fantasy, sword & sorcery and other works, many aimed at young adult readers.
Used availability for Adrian Cole's A Plague of Nightmares
1977 : USA Mass Market Paperback
Title: A Plague of Nightmares (Dream Lords, Vol. 1)
Author(s): Adrian Cole
ISBN: 0-89083-279-X / 978-0-89083-279-0 (USA edition)
Publisher: Zebra Books / Kensington Publishing