The Great American Medicine Show - S1-E8
Visible crew/equipment: After Sully and Dr. Mike bring drunk Franklin into the clinic Sully leaves, and when Dr. Mike passes the partition as she walks toward Horace, the blue, yellow, and red T-marks are visible on the floor. (00:10:25)
The Great American Medicine Show - S1-E8
Visible crew/equipment: While Myra is lying on the table before her surgery Dr. Mike tells her she's almost ready to begin, then just as Horace is about to stand up the orange T-mark is visible on the floor. (00:38:30)
Answer: A Cooper was someone who made various things out of wood including wooden caskets and even barrels.