When You're First in Color Television, There's Got to Be a Reason.

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If memory serves, this ad appeared in a 1967 issue of Newsweek. The original has another full-page ad on the back, with no date showing.

Notice that the "middle" scene, the one on a "planet" set, is from "Man Trap," the first aired episode.

See you next time, and howdy boy to Frederick! Visit his Star Trek Scrapbook blog! The link is to the right in the Links list.