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| May 21 | Canada and Parguuay | Notes | Commerce | 193 |
| May 22 | Great Britain | Order in Council | Aliens (No. 2): Amendment | 13 |
| May 22 | Great Britain | Act of Parliament | Emergency Powers (Defence) | 14 |
| May 28 | Belgium | Arrété | King Leopold III. Incapacity to reign | 226 |
| June 4 | Great Britain | Order in Council | Aliens (No. 3): Ammendment | 15 |
| June 12 | Great Britain and Siam | Treaty | Non-aggression | 172 |
| June 12 | Japan and Siam | Treaty | Friendly Relations and Territorial Integrity | 435 |
| June 22 | France and Germany | Convention | Armistice | 402 |
| June 27 | Great Britain | Act of Parliament | Finance | 17 |
| June 28 | Finland and Soviet Union | Agreement with Appendix | Commerce | 388 |
| July 10 | Great Britain | Order in Council | Aden Protectorate : Amendment: Order 1937 | 105 |
| July 10 | Paraguay | Law | Constitution | |
| Decree | Promulgating Convention | 492 | ||
| July 17 | Paraguay | Decree | Electoral Law. Modification | 507 |
| July 17 | Great Britain | Order in Council | Egyptian Tonnage: Application India | 106 |
| July 17 | Great Britain | Order in Council | Extradition Act 1870: Aden | 108 |
| July 21 | Czechoslovakia | Decree | State Council | 379 |
| July 24 | Great Britain | Order in Council | Ceylon (State Council—Extension of Duration) | 109 |
| July 29 | Portugal and Spain | Protocol | Friendship and Non-Aggression Treaty 1939 | 520 |
| Aug. 2 | Soviet Union | Law | Formation of Moldavian Republic | 524 |
| Aug. 2 | Soviet Union | Law | Incorporation of Territories into the Ukranian Soviet Socialist Republic | 525 |
| Aug. 3 | Soviet Union | Law | Incorporation of Lithuanian Republic in Union of Soviet Socialist Republics | 527 |
| Aug. 5 | Soviet Union | Law | Incorporation of Latvian Republic in Union of Soviet Socialist Republics | 527 |
| Aug. 6 | Soviet Union | Law | Incorporation of Estonian Republic in Union of Soviet Socialist Republics | 527 |
