This is a a bi-fold brochure for Leblang “Flight-Seeing Tours” of Key West. It’s undated but likely comes from the early 1970s.
The trip would start in Miami, fly to Key West and then visitors would take the Conch Tour Train.
The Fokker F27 Friendship was the airplane used by Southeast Commuter. It’s a turboprop airliner designed and built by the Dutch company Fokker, and built in the US by Fairchild Aircraft.