Rare original story outline for the Star Trek Season Two episode entitled “Mirror, Mirror,” belonging to Linwood Dunn, 8.5 x 11, 14 pages, written by Jerome Bixby, and headed at the bottom of the cover page, “Story Outline, April 1, 1967.” Dunn’s name is written at the top of the cover page, “Lin Dunn c/0 Editorial,” with a green received stamp at the bottom dated April 24, 1967. In this episode, a transporter malfunction places Kirk, McCoy, Scotty, and Uhura in a parallel universe, where violence and murder run rampant. In fine condition. This would be the third revision to the story, with filming commencing on July 25. This episode, the first to introduce the ‘mirror universe’ would be nominated for a 1968 Hugo award for Best Dramatic Presentation. RR Auction COA.