Using the original scripts, which sometimes differed from the final filmed episode, Blish turned each episode of the original Star Trek into a short story, which were collected into anthologies and published as paperback originals.

The Star Trek Reader collects three of these anthologies: Star Trek 2, Star Trek 3, and Star Trek 8. The episodes present include The City on the Edge of Forever; Arena; A Taste of Armageddon; Tomorrow Is Yesterday; Errand of Mercy; Court-Martial; Operation--Annihilate!; Space Seed; The Trouble With Tribbles; The Last Gunfight; The Doomsday Machine; Assignment: Earth; Mirror, Mirror; Friday's Child; Amok Time; Spock's Brain; The Enemy Within; Catspaw; Where No Man Has Gone Before; Wolf in the Fold; and For the World is Hollow and I Have Touched the Sky.