The O. Henry Award is an annual American award given to short stories of exceptional merit. The award is named after the American short-story writer O. Henry.
The PEN/O. Henry Prize Stories is an annual collection of the year's twenty best stories published in U.S. and Canadian magazines, written in English.
The award itself is called The O. Henry Award, not the O. Henry Prize, though until recently there were first, second and third prize winners; the collection is called The PEN/O. Henry Prize Stories, and the original collection was called Prize Stories 1919: The O. Henry Memorial Awards.
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