NMLP P-026462 · True-first precedence · minted 2026-07-04

The House of Hades (Heroes of Olympus 4)

Rick Riordan · Disney-Hyperion (New York) · 2013

US first edition (Disney-Hyperion, October 8, 2013). The UK Puffin edition was released the same day, so US and UK firsts are effectively simultaneous; the US Disney-Hyperion hardcover is the standard collector reference for this American author.

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New Mexico Literacy Project — True-first precedence NMLP P-026462 for "The House of Hades (Heroes of Olympus 4)" by Rick Riordan (https://newmexicoliteracyproject.org/id/point/p-026462, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).