NMLP P-042283 · Point of issue · minted 2026-07-19
The Dark Frontier
Eric Ambler · Hodder & Stoughton (London) · 1936
The 1936 first is therefore identified by the Hodder & Stoughton imprint and 1936 date on the title page together with the absence of any reprint or later-impression notice on the copyright page — no specific copyright-page statement for this title was confirmed in the sources consulted, and none should be asserted
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New Mexico Literacy Project — Point of issue NMLP P-042283 for "The Dark Frontier" by Eric Ambler (https://newmexicoliteracyproject.org/id/point/p-042283, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).