NMLP P-026431 · True-first precedence · minted 2026-07-04

The Battle of the Labyrinth (Percy Jackson 4)

Rick Riordan · Hyperion Books for Children / Disney (New York) · 2008

The US Hyperion Books for Children hardcover (released 6 May 2008) is the true first. Confirm the complete number line ending in 1. The first printing was very large (about one million copies), so first printings are relatively common.

Full identification guide for this title →

New Mexico Literacy Project — True-first precedence NMLP P-026431 for "The Battle of the Labyrinth (Percy Jackson 4)" by Rick Riordan (https://newmexicoliteracyproject.org/id/point/p-026431, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).