We're celebrating the 50th anniversary of TAS' second season with guest Aaron Harvey, author of "Star Trek: The Official Guide to the Animated Series." In many ways, TAS broke new ground by expanding on what had come from TOS and making the Trek universe a richer place. For the first time, Orion pirates were seen, and they, along with many other TAS creations, have left an indelible mark on the franchise ever since. Dive into the roots of felinoid species, what makes "canon" and more on this week's episode of The Trek Files. Document and additional references: "The Pirates of Orion" storyboards - 1974 The Trek Files Season 12 on Memory Alpha All episodes and documents: The Trek Files on Memory Alpha Visit the Trekland site for behind-the-scenes access and exclusive merchandise.