NMLP P-017562 · True-first precedence · minted 2026-07-04

Mercy Watson: Something Wonky This Way Comes (Mercy Watson 6)

Kate DiCamillo · Candlewick Press (Cambridge, MA) · 2009

US Candlewick edition is the true first (2009). US author and US publisher, so no competing UK or Canadian precedence. Final title of the original six-book run.

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New Mexico Literacy Project — True-first precedence NMLP P-017562 for "Mercy Watson: Something Wonky This Way Comes (Mercy Watson 6)" by Kate DiCamillo (https://newmexicoliteracyproject.org/id/point/p-017562, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).