The collection contains 355 separate issues, ranging from 1950 through 1976. Open Culture notes that it’s not quite the entire run of the magazine, but it’s got plenty of material to keep fans occupied for years. It includes stories from science fiction legends such as Isaac Asimov, Robert A. Heinlein, Clifford Simak, and Theodore Sturgeon. There are also some underappreciated authors who deserve re-discovery, such as Kris Neville, Alan E. Nourse, or John Christopher. (Sadly, like most publications of this era, female SF authors were underrepresented.)
Galaxy Science Fiction was a digest magazine founded by editor Horace Leonard Gold, after the Second World War. During this time, the science fiction field was in flux. The scene’s biggest publication, Astounding Science Fiction, was starting to lose its edge, while American readers had more entertainment options, like radio, novels, or television.