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Not photo-heavy, but containing interesting previews of the tech seen in the movie, this 1979 cover article from "Science Digest" is primarily about the new Trek's science advisor's contributions to the script. Having a science advisor for all it's various outings helped make it more than the average "make-it-up-completely" sci-fi people were used to seeing.
Below: When the bumper sticker on my family car said "My other car is a starship," it wasn't kidding. Source: Warp Car