11. A propeller-driven aircraft with a hangar and vehicles around it Date: unknown Format: Still image Access: Public
12. Three men around a tractor with an airplane and hangar in the background Date: unknown Format: Still image Access: Public
13. Two men looking at a large airplane propeller's engine Date: unknown Format: Still image Access: Public
14. Two soldiers in coats at an air base with some cars and a hangar Date: unknown Format: Still image Access: Public