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In page Stranger in a Strange Land:

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Though Heinlein was neither a member nor a promoter of the Church, it was formed including frequent correspondence between Zell and Heinlein, and Heinlein was a paid subscriber to the Church's magazine Green Egg.[citation needed] This Church still exists as a 501(c)(3) recognized religious organization incorporated in California, with membership worldwide, and it remains an active part of the neopagan community.[3]