James Blish wrote a series of short stories adaptations of Star Trek episodes from 1967 to 1975, called simply Star Trek. The adaptations were generally written based on scripts (often earlier versions than filmed), and initially without reference to the finished episodes, as they had not yet aired in the United Kingdom, Blish's base of operations.
James Blish was credited as the adapter for the stories for Star Trek 1 through to Star Trek 11, although in Voyages of the Imagination, it is acknowledged that after "Star Trek 7" or "Star Trek 8", the stories were ghost-written by Blish's wife, J. A. Lawrence, and her mother; without the knowledge of editor Frederik Pohl. Star Trek 12, published after the death of Blish in July 1975, was credited to Blish and Lawrence. The stories were collected in four hardcover titles named The Star Trek Reader 1,2,3 and 4 in 1976 and 1977. The Harry Mudd stories had been saved for a novel, and eventually were published together, with an original story written by Lawrence.
Bantam Books republished the stories in 1991, in three volumes, one per season (excluding the Harry Mudd stories).