Who wrote "A Visit From St. Nicholas"?

On this day in 1823 the Christmas classic, "A Visit From St. Nicholas" (commonly known as "'Twas the Night Before Christmas") was published anonymously in the Troy, New York Sentinel. Twenty years and much popularity later, Clement C. Moore claimed and was accorded authorship, but recent scholarship by forensic literary critic Don Foster -- he's the one who established the author of Primary Colors -- has cast this very much in doubt. Moore was a dour and strait-laced biblical scholar, a man decidedly un-jolly, and in Author Unknown, his 2000 collection of literary whodunits, Foster provides much circumstantial evidence against him.

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