Published
September 1968
Pages
36
"Invasion of the City Builders" The planet Zarta has been taken over by their own technology. Machines that built their city have not stopped and have nearly filled the planet with one large vacant city. When the Enterprise Crew show up they are quick to help the remaining people the best they can.
Key Facts
- There are two $0.15 cent versions of this issue - a more common version with an advertisement on the back and a lesser available one with a pin-up photograph of Spock on the back cover
- In January 2024 PHOTO BACK COVER 9.6 sold for $11,400
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