NMLP P-042807 · True-first precedence · minted 2026-07-19
The Pigman
Paul Zindel · Harper & Row (New York) · 1968
The US Harper & Row edition (New York, 1968) is the true first; no simultaneous or prior UK edition is documented in the sources consulted, and British issues postdate it, so there is no meaningful UK-vs-US precedence contest. Only the US edition is named because no competing first is attested. Later HarperCollins reprints, including the 2005 issue, are reprints and not "first thus" candidates.
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New Mexico Literacy Project — True-first precedence NMLP P-042807 for "The Pigman" by Paul Zindel (https://newmexicoliteracyproject.org/id/point/p-042807, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).