| 28 September 1878 |
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Agreement between Her Majesty and the King of Tonga for securing the same privileges to British Subjects as are now or may be given to Subjects of other States ; also giving jurisdiction to Her Majesty's High Commission Court ; and containing Extradition Clauses (to remain in force for one year unless a Treaty is concluded before that time) |
| 28 August 1879 |
|
Treaty of Friendship, and Commerce between Great Britain and the King and Government (Malo) of Samoa |
| 2 September 1879 |
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Convention between Great Britain [Germany, the United States] and the King and Government of Samoa for the government of the Town and District of Apia |
| 23 July 1969 |
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Exchange of Notes between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Western Samoa concerning the Guarantee by the Government of the United Kingdom and the Maintenance of the Minimum Sterling Proportion by Western Samoa (Sterling Area Agreement) |