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Douglas A-4 M/N/AR/AF-1 Skyhawk: Aircraft in Detail (Duke Hawkins): Pied, Robert, Deboeck, Nicolas: 9782931083048: Amazon.com: Books
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Douglas – Douglas (2001, CD) - Discogs
File:Madrid - Douglas DC-4 Skymaster - 140405 113146.jpg - Wikimedia Commons
True Story | The Mighty Douglas DC-4 Skymaster
