NMLP P-026515 · True-first precedence · minted 2026-07-04

The Sword of Summer (Magnus Chase 1)

Rick Riordan · Disney-Hyperion (New York) · 2015

US Disney-Hyperion hardcover of October 6, 2015 is the true first; no earlier UK or Canadian edition. A separate retailer 'exclusive' issue of the first printing exists with a 'Guide to the Norse Gods' section tipped in; the number line and stated-edition line are otherwise the same as the trade first.

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New Mexico Literacy Project — True-first precedence NMLP P-026515 for "The Sword of Summer (Magnus Chase 1)" by Rick Riordan (https://newmexicoliteracyproject.org/id/point/p-026515, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).