(written from a Production point of view)
TV Guide is a US publishing company that publishes a weekly mini-magazine about television programming. These magazines features covers relevant to television shows airing that week. Star Trek covers have appeared on twelve of these magazines, starting with the issue dated 4-10 March, 1967.
In addition to their weekly guide, TV Guide occasionally publishes collector's edition magazines. To date, they have published at least three based on Star Trek:
Prior to the airing of Star Trek: Deep Space Nine's final episode "What You Leave Behind", TV Guide released four different covers featuring all of the main cast members. Around the same time, TV Guide called Deep Space Nine "the best acted, written, produced, and altogether finest... Star Trek series". (Star Trek: Deep Space Nine Companion)