The Original Science Fiction Stories No.3, May 1958. Some wear to cover, small tears at base of spine, stains on back cover, internally clean and reasonably bright, given the cheap paper. Good overall. Contains: The Tower of Zanid (de Camp - stated as part 1 of 4, although the MITSFS Index 1951-65 states only three parts in total), Invasion Vanguard (Bethlen), Postman;s Holiday (de Vet), Research Team (Hinkle), The Logical Life (Fritch), Satellites in Fact and Fiction (Macklin), and various bits and pieces.