Q: I have a folding combination cane and stool from the 1939 New York World’s Fair. There is a painted Tryon and Perisphere logo on the plywood seat. Branded into the bottom of the seat is “Kan-O-Seat, Pat’d May 21, 1935, Stafford-Johnson Seating Corp., Ionia, Mich.” Can you tell me anything about this piece?