NMLP P-027906 · True-first precedence · minted 2026-07-04

Thorns

Robert Silverberg · Ballantine · 1967

US Ballantine paperback original (U6097, 1967) is the true first; a separate first Canadian edition also exists but is not the precedent.

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New Mexico Literacy Project — True-first precedence NMLP P-027906 for "Thorns" by Robert Silverberg (https://newmexicoliteracyproject.org/id/point/p-027906, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).