NMLP P-012484 · True-first precedence · minted 2026-07-04

Harry Potter and the Half-Blood Prince

J. K. Rowling · Bloomsbury (London) · 2005

UK Bloomsbury is the true first; the US Scholastic edition was effectively simultaneous (2005). The 'First Edition' statement together with the page 99 'eleven O.W.L.s' reading are the reliable first-printing markers.

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New Mexico Literacy Project — True-first precedence NMLP P-012484 for "Harry Potter and the Half-Blood Prince" by J. K. Rowling (https://newmexicoliteracyproject.org/id/point/p-012484, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).