Maria Elizabeth Ridulph (March 12, 1950 – c. December 1957) was an American girl who disappeared on December 3, 1957 from a street corner (Center Cross Street and Sycamore Street) in her neighborhood in Sycamore, Illinois when she was seven years old. She was last seen by a childhood friend in the company of an unknown man who appeared to be in his early twenties and called himself "Johnny". Nearly five months later, her remains were found in a wooded area near Woodbine, Illinois, approximately 100 miles from her home.
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