Carolyn Janice Cherry, better known by the pen name C. J. Cherryh, is an American writer of speculative fiction. She has written more than 80 books since the mid-1970s, including the Hugo Award–winning novels Downbelow Station (1981) and Cyteen (1988), both set in her Alliance–Union universe, and her Foreigner series. She is known for worldbuilding, depicting fictional realms with great realism supported by vast research in history, language, psychology, and archeology.

Donald Allen Wollheim was an American science fiction editor, publisher, writer, and fan. As an author, he published under his own name as well as under pseudonyms, including David Grinnell, Martin Pearson, and Darrell G. Raynor. A founding member of the Futurians, he was a leading influence on science fiction development and fandom in the 20th-century United States. Ursula K. Le Guin called Wollheim "the tough, reliable editor of Ace Books, in the Late Pulpalignean Era, 1966 and '67", which is when he published her first two novels in Ace Double editions.