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- Item Type > Audiovisual (remove)
- Subject > Aeronautics, Commercial (remove)
- Format > 8mm (photographic film size) (remove)
- Coverage > Arlington (Va.) (remove)
- Subject > Convair 240, 340, 440 Family (remove)
- Subject > Douglas DC-4 Family (remove)
- Subject > Commuter aircraft (remove)
- Subject > Douglas DC-6 Family (remove)
- Subject > Douglas VC-118 Liftmaster (remove)