| 11 August 1880 |
|
Convention between Great Britain and Spain for the Establishment of International Copyright with Declaration, relative to Place of Publication |
| 4 May 1910 |
|
International Agreement for the Suppression of Obscene Publications |
| 12 September 1923 |
7 August 1924 |
International Convention for the Suppression of the Circulation of and Traffic in Obscene Publications |
| 12 November 1947 |
12 November 1947 |
Protocol amending the Convention of 12th September, 1923, for the Suppression of the Circulation of and Traffic in Obscene Publications. |
| 4 May 1949 |
4 May 1949 |
Protocol amending the Agreement for the Suppression of the Circulation of Obscene Publications signed at Paris on 4th May, 1910 |
| 3 December 1958 |
30 May 1961 |
Convention concerning the Exchange of Official Publications and Government Documents between States adopted by the General Conference of the United Nations Educational, Scientific and Cultural Organisation at its Tenth Session |
| 3 December 1958 |
23 November 1961 |
Convention concerning the International Exchange of Publications, adopted by the General Conference of the United Nations Educational, Scientific and Cultural Organisation at its Tenth Session |