One of the Blish adaptation volumes in the 70s. I don't recall which one, but I think it was #5.
My first was Star Trek Log Three, a used-bookstore edition with the cover torn off (and thus probably illegal, a book that was meant to be destroyed, although I don't know if they did it that way back in 1975 or so).
We use essential cookies to make this site work, and optional cookies to enhance your experience.