When a decimated human civilization discards the Earth for the moon, the Earth slowly heals itself. What happens when that civilization wants to reclaim the Earth?

"May have been two seasons ago, may have been three. This child don't shine at figures much. Now Doc -- he's got a passel of books up to his lodge and even Iron Head keeps a few in his tipi. But I never did hold with book talk, not even for a white, let alone Injuns."

Other Worlds (July 1955)
Blood Runs Cold (1961)
Complete Stories of Robert Bloch -- V 1: Final Reckonings (1990)