S. H. Marpel & Marion Zimmer Bradley 
Marion Zimmer Bradley: Golden Age Space Opera Tales [EPUB ebook] 

Marion Eleanor Zimmer Bradley (June 3, 1930 – September 25, 1999) was an American author of fantasy, historical fantasy, science fiction, and science fantasy novels, and is best known for the Arthurian fiction novel The Mists of Avalon, and the Darkover series.
Bradley made her first sale as an adjunct to an amateur fiction contest in Amazing Stories in 1949 with the short story "Outpost". "Outpost" was published in Amazing Stories Vol. 23, No. 12, the December 1949 issue; it had previously appeared in the fanzine Spacewarp Vol. 4, No. 3, in December 1948. Her first professional publication was a short story "Women Only", which appeared in the second (and final) issue of Vortex Science Fiction in 1953. Her first published novel-length work was Falcons of Narabedla, first published in the May 1957 issue of Other Worlds.
Space Opera is a subgenre of science fiction that emphasizes space warfare, melodramatic adventure, interplanetary battles, chivalric romance, and risk-taking. Set mainly or entirely in outer space, it usually involves conflict between opponents possessing advanced abilities, futuristic weapons, and other sophisticated technology.
The term has no relation to music, as in a traditional opera, but is instead a play on the terms "soap opera", a melodramatic television series, and "horse opera", which was coined during the 1930s to indicate a formulaic Western movie. Space operas emerged in the 1930s and continue to be produced in literature, film, comics, television, and video games.
The Golden Age of Pulp Magazine Fiction derives from pulp magazines (often referred to as "the pulps") as they were inexpensive fiction magazines that were published from 1896 to the late 1950s. The term pulp derives from the cheap wood pulp paper on which the magazines were printed. In contrast, magazines printed on higher-quality paper were called "glossies" or "slicks". (Wikipedia)
The pulps gave rise to the term pulp fiction. Pulps were the successors to the penny dreadfuls, dime novels, and short-fiction magazines of the 19th century. Although many writers wrote for pulps, the magazines were proving grounds for those authors like Robert Heinlein, Louis La Mour, "Max Brand", Ray Bradbury, Philip K. Dick, and many others. The best writers moved onto longer fiction required by paperback publishers. Many of these authors have never been out of print, even long after their passing.
Anthology containing:
— Year of the Big Thaw
— The Wind People
— Falcons of Narabedla
— The Planet Savers
— The Door Through Space
— The Colors of Space
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