Harry Potter and the Sorcerer's Stone (aka. HP and the Philosopher's Stone) by J.K. Rowling (HP and the Chamber of Secrets, Prisoner of Azkaban, etc.) Illustrated by Jim Kay. The US editions were issued by Arthur A Levine Books/Scholastic US slightly after the UK editions until HP and the Prisoner of Azkaban which were released in the UK and US more or less simultaneously.
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