NMLP P-018566 · True-first precedence · minted 2026-07-04

The Ringworld Engineers

Larry Niven · Phantasia Press · 1980

The Phantasia Press limited edition is the true first in book form; the Holt trade is a later first trade edition, not a parallel issue. The original record's framing (Holt as the first, Phantasia as a parallel) understated Phantasia's precedence.

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New Mexico Literacy Project — True-first precedence NMLP P-018566 for "The Ringworld Engineers" by Larry Niven (https://newmexicoliteracyproject.org/id/point/p-018566, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).