Harry Harrison (1925 - 2012)
Harry Harrison was born Henry Maxwell Dempsey in Connecticut, in 1925. He is the author of a number of much-loved series including the Stainless Steel Rat and Bill the Galactic Hero sequences and the Deathworld Trilogy. He is known as a passionate advocate of Esperanto, the most popular of the constructed international languages, which appears in many of his novels. He has been publishing novels for over half a century and is perhaps best known for his seminal novel of overpopulation, Make Room! Make Room!, which was adapted into the cult film Soylent Green. He died in 2012.
John Holm
John Holm is the pseudonym under which Thomas Alan Shippey, born 1943, co-wrote The Hammer and the Cross trilogy with Harry Harrison. Shippey is a scholar of medieval literature, including that of Anglo-Saxon England, and of modern fantasy and science fiction, with a particular focus on the works of J. R. R. Tolkien.