Edwin Charles Tubb (15 October 1919 – 10 September 2010) was a British writer of science fiction, fantasy and western novels. The author of over 140 novels and 230 short stories and novellas, Tubb is best known for The Dumarest Saga (US collective title: Dumarest of Terra) an epic science-fiction saga set in the far future Much of Tubb's work has been written under pseudonyms including Gregory Kern, Carl Maddox, Alan Guthrie, Eric Storm and George Holt. He has used 58 pen names over five decades of writing although some of these were publishers' house names also used by other writers: Volsted Gridban (along with John Russell Fearn), Gill Hunt (with John Brunner and Dennis Hughes), King Lang (with George Hay and John W Jennison), Roy Sheldon (with H. J. Campbell) and Brian Shaw. Tubb's Charles Grey alias was solely his own and acquired a big following in the early 1950s. An avid reader of pulp science-fiction and fantasy in his youth, Tubb found that he had a particular talent as a writer of stories in that genre when his short story 'No Short Cuts' was published in New Worlds magazine in 1951. He opted for a full-time career as a writer and soon became renowned for the speed and diversity of his output. Tubb contributed to many of the science fiction magazines of the 1950s including Futuristic Science Stories, Science Fantasy, Nebula and Galaxy Science Fiction. He contributed heavily to Authentic Science Fiction editing the magazine for nearly two years, from February 1956 until it folded in October 1957. During this time, he found it so difficult to find good writers to contribute to the magazine, that he often wrote most of the stories himself under a variety of pseudonyms: one issue of Authentic was written entirely by Tubb, including the letters column. His main work in the science fiction genre, the Dumarest series, appeared from 1967 to 1985, with two final volumes in 1997 and 2008. His second major series, the Cap Kennedy series, was written from 1973 to 1983. In recent years Tubb updated many of his 1950s science fiction novels for 21st century readers. Tubb was one of the co-founders of the British Science Fiction Association.

John Rankine (born Douglas Rankine Mason) is a British science fiction author, who has written books both as John Rankine and as Douglas R. Mason. Rankine was born in Hawarden, Flintshire, Wales and first attended Chester Grammar School and in 1937 went to study English Literature and Experimental Psychology at the University of Manchester, where he was a friend of Anthony Burgess (as mentioned in Little Wilson and Big God: The First Part of the Confession, AB's autobiography).

John Kenneth Muir (born 1969) is an American literary critic. He has written as of 2010 twenty-one reference books in the fields of film and television, with a particular accent on the horror and science fiction genres. He has been described as one of the horror genre's "most widely read critics", and as an "accomplished film journalist". (from Wikipedia)