1. Three men checking propeller engine Creator: Kisco Certified Photo Service. Date: February 24, 1949 Format: Still image Access: Log In Required
2. Four men looking at an airplane propeller's engine Date: unknown Format: Still image Access: Public
3. A row of propeller-driven aircraft with a group of men checking the engine of one Date: unknown Format: Still image Access: Public
4. Two men looking at a large airplane propeller's engine Date: unknown Format: Still image Access: Public