NMLP P-027697 · Book-club / reprint tell · minted 2026-07-04

The Sigma Protocol

Robert Ludlum · St. Martin's Press · 2001

Book club and later reprint copies lack the full number line ending in 1 and often show a book-club blind stamp on the rear board with a jacket bearing no printed price.

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New Mexico Literacy Project — Book-club / reprint tell NMLP P-027697 for "The Sigma Protocol" by Robert Ludlum (https://newmexicoliteracyproject.org/id/point/p-027697, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).