Irwin Allen directed The Lost World (1960) (based on the Arthur Conan Doyle novel), and on numerous occasions used the movie as a source of stock dinosaur footage for the TV shows he produced. In "Turn Back the Clock," David Hedison dresses in the same outfit he wore in the movie. Yvonne Craig wears the same outfit Jill St. John wore in the movie, and the long shots are actually of Jill St. John. Additional recycled footage from the film appears in Terror on Dinosaur Island (1965), Chase Through Time (1967), and Graveyard of Fools (1970). Vitina Marcus reprises her role as a native girl in "Turn Back the Clock," and plays a woman from the future in "Chase Through Time."
In his promotional video for the series (shown on the DVD set Season One Volume One), Irwin Allen implies that he intended to have The Lost World (1960) star Jill St. John return to film new scenes for the episode, much as Vitina Marcus did. In the finished episode, the St. John role was recast with Yvonne Craig. According the same pitch, Allen intended to create an episode based around Red Buttons's comical action scenes from Allen's Five Weeks in a Balloon (1962) (presumably with Buttons filming new footage interacting with the Seaview crew), but the Red Buttons episode never materialized.
First appearance of the Seaview's diving bell.
The dramatic surfacing of the Seaview amidst Antarctic icebergs is lifted directly from the original Voyage to the Bottom of the Sea (1961) movie.
As this was her only "Voyage" episode, Yvonne Craig here worked for the only time with each of Richard Basehart, David Hedison, Del Monroe, Henry Kulky and Robert Dowdell, this being a year before one of the show's most popular stars Terry Becker joined the series as Chief Sharkey, but she had worked with him earlier that year in an episode of the series Channing (1963) titled My Son, the All-American (1964). One of that short-lived drama series' main stars was Henry Jones who would himself become strongly identified with "Voyage," in his latter two (of three) guest appearances becoming the show's main nemesis for Admiral Nelson, the time-traveling villain Mr. Pem.