Final answer:
The transept of the Old Minnehaha County Jail contained chambers with wooden shelves, a podium with an altar, and staircases in the corner chambers.
Step-by-step explanation:
The transept of the Old Minnehaha County Jail contained several features. According to the information provided, the northeast room suite of the transept had chambers equipped with wooden shelves in the walls and displayed cavities for setting in pivot stones, indicating the presence of solid doors. The central hall of the transept had a podium accessible by a small staircase and an altar with a fire-stained surface. Additionally, the northwest and east corner chambers contained staircases.