Weighing it at nearly 600 pages, These Are the Voyages is written by Marc Cushman, a television writer who was entrusted with the complete files of the original series and actually requested by the late Gene Roddenberry to tell the whole story.
And that's what the author has done. With access to virtually every memo - from Roddenberry himself, associate producer Robert Justman, members of the NBC brass and countless others - as well as each draft of every script from outline to final shooting script, plus dozens of exclusive interviews, he has reconstructed the making of every episode comprising the show's first season. It's an incredible story with many revelations, among them that Star Trek was NOT the ratings disaster that it's always been portrayed to be, the fact that virtually every single episode was a nightmare to bring to completion with budget concerns ever-present AND ever-threatening, and that NBC executives were not necessarily the nimrods Roddenberry portrayed them as.
As someone who has written a number of books chronicling the history of Star Trek, it's not easy to admit: but THIS is the definitive telling. For more info and to order a copy, head over to http://www.jacobsbrownmediagroup.com/these-are-the-voyages.html.
From Access Hollywood comes the following video in which Cushman, joined by John D.F. Black, Star Trek's first story editor, discusses the journey of These Are the Voyages.