NMLP P-044315 · True-first precedence · minted 2026-07-19
Knuffle Bunny: A Cautionary Tale
Mo Willems · Hyperion Books for Children (New York) · 2004
US edition is the true first: Hyperion (New York), 2004, published September 2004. The UK edition from Walker Books (London), ISBN 9781844280599, followed on 4 July 2005 and is a later issue, not a co-first; it is collected only as the first UK appearance. No prior magazine or foreign-language appearance is documented — the census claim of a US-only true first is confirmed.
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New Mexico Literacy Project — True-first precedence NMLP P-044315 for "Knuffle Bunny: A Cautionary Tale" by Mo Willems (https://newmexicoliteracyproject.org/id/point/p-044315, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).