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Wild Bill Hickok Memorial is a state historic site operated by the Illinois Historic Preservation Agency. It is located in a small park at the intersection of Main and Ottawa Streets in Troy Grove, Illinois. The memorial marks the site of the birthplace of "Wild Bill" Hickok and features a plaque on the granite monument that honors Hickok's services as a scout and spy in the western states during the American Civil War, and as a frontier express messenger. The monument was dedicated on August 29, 1930.