Trivia / Star Trek S3 E23 "All Our Yesterdays"

• Fix Fic: Of a sort, with the novels Yesterday's Son and Time for Yesterday by A.C. Crispin. Images being viewed later on the Enterprise show evidence that Spock left Zarabeth pregnant and she had a son. They use the Guardian of Forever to go back in time and get the young man, Zar, and the rest of the story is his acclimation (with more or less success) to his father's culture, place and time.
• Prop Recycling: The atavachron device is the reused prop of Gary Seven's Beta 5 computer from "Assignment: Earth".
• What Could Have Been:
  • The original script had Spock and McCoy trapped in a desert wasteland, with McCoy dying from the desert heat when the pair was captured by misshapen humanoids, and there was no Zarabeth. Kirk was trapped in a period which resembled San Francisco's Barbary Coast, but returns to the library with another time traveler. At the end the time traveler who helped Kirk destroys the time portal. Kirk, Spock, and McCoy flee the building and it ages to a hollowed ruin behind them. Kirk picks up a tattered book and it literally crumbles to dust in his hands.
  • A scene in the story draft that was cut would have had McCoy "stuck" in the time doorway, with part of his body in the present and the rest in the past.
• Working Title: A Handful of Dust.