NMLP P-026878 · True-first precedence · minted 2026-07-04

The Puppet Masters

Robert A. Heinlein · Doubleday & Company · 1951

US Doubleday first edition is the true first; magazine serialization (in Galaxy) precedes the book but does not affect first-edition status of the hardcover.

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New Mexico Literacy Project — True-first precedence NMLP P-026878 for "The Puppet Masters" by Robert A. Heinlein (https://newmexicoliteracyproject.org/id/point/p-026878, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).