NMLP P-021398 · True-first precedence · minted 2026-07-04

The Sign on Rosie's Door

Maurice Sendak · Harper & Brothers · 1960

US Harper & Brothers first, 1960. The Harper & Brothers to Harper & Row merger did not occur until April 1962, so 1960 firsts bear the Harper & Brothers imprint; some later listings loosely catalog it as Harper & Row. Rosie later inspired the 'Really Rosie' character.

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New Mexico Literacy Project — True-first precedence NMLP P-021398 for "The Sign on Rosie's Door" by Maurice Sendak (https://newmexicoliteracyproject.org/id/point/p-021398, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).