New York: Harmony Books, 1992. First American Editions. First Printings. Five octavo volumes (19-21.5cm); variously-colored paper and cloth-covered boards, with titling and decorative elements stamped in metallic colors on spines and front covers; dustjackets; [viii],215,[1]; [vi],250; [viii],227,[5]; [iv],204; [viii],[8],9-277,[3]pp. So Long and Mostly Harmless are signed by the author on the front endpaper and title page respectively. All volumes clean, about Fine, in unclipped dustjackets that are Near Fine or better. Attractive set of Adams's comedic science fiction series, adapted from his much-loved (and Hugo-nominated) BBC 4 radio series in 1978. "Earth is demolished to make way for a new hyperspatial bypass, but the hero stows away on a starship with a reporter for the eponymous reference book. Their outrageous extraterrestrial adventures are part satire, part slapstick" (Barron, Anatomy of Wonder II-3). Basis for the 1981 TV series on BBC, and the 2005 film adaptation by…