I wish I had this set, so I could see for myself if it's based on the cartoons (unlikely, given the title "Godzilla's Rampage"), or if it was more on the Marvel Comics (more likely, given the cover image is more or less taken from Marvel's Godzilla #1), or if it was all-new for View-Master (perhaps the most likely of all!).
A quick Google search turned up this sample from the reels:
It sure looks more like the Marvel Comics than I expected, but still probably all-new...
Go-Go Godzilla is my daily Godzilla collectibles blog! Come back daily to check out vintage posters, stills, lobby cards, toys, and other Godzilla-related collectibles, plus stuff from other giant monster movies, like Gorgo, Frankenstein Conquers the World, War of the Gargantuas, King Kong Escapes, and more!
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