Back in 1980, around the time of the Dino DeLaurentis/Mike Hodges Flash Gordon feature film and the Filmation Flash Gordon animated series, Tempo Books published a six-volume series of original Flash Gordon novels, written by aviation/military thriller author David Hagberg. Massacre in The 22nd Century War of The Citadels Crisis on Citadel II Forces from The Federation These books are not, specifically, tie-ins with movie or cartoon, nor do they adapt any stories from the long-running…
