The Star Trek Concordance is a reference book published in 1976 by Ballantine Books. It was written by Bjo Trimble who had already made a name for herself in fandom circles. She was instrumental in the letter writing campaign that brought Star Trek back for its third season.
The Concordance started its life as a collection of note cards made by Dorothy Heydt and Bjo. The two grew it into an early fanzine with multiple editions for each season. But with the growing popularity of the Original and Animated Series, Ballantine became interested in releasingThe Concordance as a full edition.
This book is a great window into the past to see what the state of Star Trek was in 1976 when all we had was the Original and Animated Series.
