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In page Goodnight Moon:

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Goodnight Moon had poor initial sales: only 6,000 copies were sold upon initial release in the fall of 1947.[citation needed] Anne Carroll Moore, the influential children's librarian at the New York Public Library (NYPL), regarded it as "overly sentimental".[citation needed] The NYPL and other libraries did not acquire it at first.[2] During the post-World War II Baby Boom years, it slowly became a bestseller. Annual sales grew from about 1,500 copies in 1953 to almost 20,000 in 1970;[2] by 1990, the total number of copies sold exceeded four million.[3] As of 2007, the book sells about 800,000 copies annually,[4] and by 2017 had cumulatively sold an estimated 48 million copies.[5] Goodnight Moon has been translated into at least fifteen other languages.[6]