A lovely set of later editions, published by Bodley Head between 1964 to 1967. Out of the Silent Planet is a ninth impression published in 1967, Perelandra is an eighth impression published in 1964 and is That Hideous Strength is a fifth impression published in 1965. All three books are in very good plus condition, in near fine unclipped dust jackets. The books are clean and free from any internal markings or inscriptions, aside from tape residue marks to the end papers and scattered foxing to the top of the text blocks. The dust jackets are extremely well preserved, aside from slight fading and a 1cm tear on the front of the jacket of That Hideous Strength. Rarely found in such good condition. The Space Trilogy (also known as The Cosmic Trilogy or The Ransom Trilogy) is a series of science fiction novels.