Texas State Historical AssociationTexas Prison Rodeo.The Texas Prison Rodeo, instituted in 1931 by general prison manager Marshall Lee Simmons as recreation for inmates and entertainment for staff and their families, soon earned a reputation as the wildest of cowboy shows, attracting huge crowds and favorable publicity to the Huntsville unit. After securing the blessing of local clergy to hold the rodeo on Sunday afternoons in October, Simmons trucked in livestock, participants, and spectators from the outlying prison farms to a vacant field behind "The Walls." Within two years public attendance swelled from a handful of outsiders to almost 15,000, prompting prison officials to erect wooden stands and charge admission.