1. An air tank with some men and a row of propeller-driven aircraft in the background Date: unknown Format: Still image Access: Public
2. Four men looking at an airplane propeller's engine Date: unknown Format: Still image Access: Public
3. Man in air force uniform in front of a row of propeller-driven aircraft. Date: unknown Format: Still image Access: Public
4. A row of propeller-driven aircraft with a group of men checking the engine of one Date: unknown Format: Still image Access: Public
5. Three men around a tractor with an airplane and hangar in the background Date: unknown Format: Still image Access: Public
7. Two men is suits by propeller-driven aircraft Creator: Harris, Frank. Date: unknown Format: Still image Access: Public
8. Two men looking at a large airplane propeller's engine Date: unknown Format: Still image Access: Public