John M. Clemens Justice of the Peace Office 
205 Hill Street
Hannibal, MO 63401

Mark Twain's father, John Marshall Clemens, presided here in the 1840's as justice of the peace. The courtroom provides the setting for the trial of Muff Potter in Tom Sawyer. In the 1940's, the building stood empty and was to be razed. Warner Brothers movie studios came to its rescue by purchasing the building and funding its repairs.