NMLP P-000345 · True-first precedence · minted 2026-07-04

Lord Edgware Dies (US: Thirteen at Dinner)

Agatha Christie · William Collins (Crime Club) · 1933

The UK Collins printing is broadly accepted as the true first edition, first impression, despite the near-simultaneous US issue under the variant title.

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New Mexico Literacy Project — True-first precedence NMLP P-000345 for "Lord Edgware Dies (US: Thirteen at Dinner)" by Agatha Christie (https://newmexicoliteracyproject.org/id/point/p-000345, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).