| 12 July 1871 |
|
Protocol relative to the Jurisdiction of the British Consul General in Tripoli in Africa |
| 5 July 1912 |
|
International Radiotelegraph Convention |
| 21 June 1920 |
|
International Convention for the Creation at Paris of an International Institute of Refrigeration |
| 31 October 1920 |
|
Convention concerning the Organisation of Combat against Locusts |
| 21 April 1926 |
1 January 1927 |
Protocol regarding the International Convention of June 7, 1905, for the Creation of the International Institute of Agriculture |
| 25 November 1927 |
1 January 1929 |
Convention regarding Radiotelegraphy [with General Regulations and Supplementary Regulation] |
| 9 December 1932 |
1 January 1934 |
Convention concerning International Telecommunications |
| 19 June 1933 |
15 January 1934 |
Convention Wireless Telegraphy (European Broadcasting frequencies) |
| 20 March 1934 |
|
Universal Postal Convention |
| 31 May 1937 |
|
International Agreement modifying the International Convention of June 21, 1920 for the establishment of an International Institute of Refrigeration |