Double Dose of Dean

Historical marker location:

700 Clark Avenue, Saint Louis, Missouri

( Marker is on South 8th Street (Old U.S. 66) south of Spruce Street, on the right when traveling north.)

September 21, 1934. Greatest Moments

The Missouri State Penitentiary, located in Jefferson City, was once the oldest operating prison west of the Mississippi River. It opened in 1836 and closed in 2004.