Ace Books began publishing genre fiction in 1952. Initially these were mostly in the tête-bêche (double) format, but they also published a few single volumes in the early years. The tête-bêche format was discarded in 1973, with later doubles being published adjacent to each other. Between 1952 and 1968, the books had a letter-series identifier; and after that date they were given five-digit numeric serial numbers. Ace stopped publishing its doubles series sometime around 1978.
Tête-bêche (from the French meaning "head-to-toe") is a publishing term which refers to a single volume in which two texts are bound together, with one text rotated 180° relative to the other. Books bound in this way have no back cover, but instead have two front covers and a single spine with two titles.
A Rim Worlds story based around the adventures of Derek Calver, The Rim of Space sees Chandler's hero determined to join the Rim Runners in their exploration of desolate planets. He joins the crew of Lorn Lady and sets forth for Mellise, a planet inhabited by intelligent amphibians. He later visits Groller, where the natives have just qualified as humanoids; Stree, with its tea-loving lizards; and Tharn, the home of a pre-industrial civilization.
New York (City) : Ace Books , 1962A short story collection comprising: 'With Good Intentions,' 'The Subtracter' (aka 'The Minus Effect'), 'The Tin Messiah' (aka 'The Soul Machine'), 'The Sleeping Beauty,' 'The Wandering Buoy,' 'The Mountain Movers' and 'What You Know.' The collection was first published in 1972 as one half of an Ace Doubles edition (with Robert Lory's The Veiled World).
New York (City) : Ace Books , 1972