These Are the Voyages is a six-volume non-fiction reference book series by Marc Cushman with Susan Osborn about Star Trek: The Original Series and the subsequent movies/television in the 1970s, published by Jacobs Brown Press. The information revealed inside primarily comes from production documents that were donated by Star Trek creator/producer Gene Roddenberry and show co-producer Robert H. Justman to the UCLA Film and Television Archive. There is one book for each of the three seasons of Star Trek: TOS. The first book documenting the first season of the show, These Are the Voyages: TOS, Season One was published in 2013. These Are the Voyages: TOS, Season Two was published in 2013 and These Are the Voyages: TOS, Season Three in 2015. In 2019, the next volume, These Are the Voyages: Gene Roddenberry and Star Trek in the 1970s, Volume 1 (1970-1975), was published. The subsequent volumes, These Are the Voyages: Gene Roddenberry and Star Trek in the 1970s, Volume 2 (1975-1977) and These Are the Voyages: Gene Roddenberry and Star Trek in the 1970s, Volume 3 (1978-1980) were released together in 2020. Source: Wikipedia (en)