Police are investigating the theft of a bronze plaque from a monument at Mark Twain's gravesite in upstate New York

Bryce Cuyle, superintendent of Woodlawn Cemetery in Elmira, says Monday that the 12-inch-by-12-inch likeness of the American writer was likely stolen sometime between Christmas and New Year's Day.

The plaque showing Twain's image was one of two on a 12-foot-tall, 78-year-old granite monument commissioned by Twain's daughter, Clara. The other plaque, of Clara's husband, was untouched.

Twain was born Samuel Langhorne Clemens and grew up in Hannibal, Missouri.

The author of such classics as "The Adventures of Huckleberry Finn" and "Tom Sawyer" married Olivia Langdon of Elmira and had a summer home in the upstate city. He died in 1910 and was buried in the Langdon family plot at Woodlawn.

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