Air defence: payment of royalties on patented inventions supplied to Dominions Unit ID: 546/D. 151/1–2. AJCP Reel No: 5380
Air Navigation Act of 1920: position of certain Dominions, including Newfoundland Unit ID: 219/8421/21–39. AJCP Reel No: 5257–5258
Air raid precautions: exchange of information with Dominions Unit ID: 529/B. 301/7–65. AJCP Reel No: 5373
Air raid precautions: South African anti-gas respirators, telephone services Unit ID: 547/D. 158/15–35. AJCP Reel No: 5380
Air service between England and Australia: air mail service, Australian colour bar in contracts for mail transportation Unit ID: 206/8209/78–269. AJCP Reel No: 5252