Lee Shelton, popularly known as "Stagolee", "Stagger Lee", "Stack-O-Lee", and other variations, was an American criminal who became a figure of folklore after murdering Billy Lyons on December 25, 1895. The murder, reportedly motivated partially by the theft of Shelton's Stetson hat, made Shelton an icon of toughness and style in the minds of early folk and blues musicians, and inspired the popular folk song "Stagger Lee". The story endures in the many versions of the song that have circulated since the late 19th century.

The Missouri State Penitentiary was a prison in Jefferson City, Missouri, that operated from 1836 to 2004. Part of the Missouri Department of Corrections, it served as the state of Missouri's primary maximum security institution. Before it closed, it was the oldest operating penal facility west of the Mississippi River. It was replaced by the Jefferson City Correctional Center, which opened on September 15, 2004.