| 4 January 1928 |
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Notes Exchanged between His Majesty's Government in Great Britain and the Government of San Salvador for the establishment of a Commercial ' Modus Vivendi ' |
| 8 August 1931 |
15 September 1931 |
Exchange of Notes between His Majesty's Government in the United Kingdom and the Government of Salvador in regard to Commercial Relations |
| 12 September 1931 |
30 September 1931 |
Exchange of Notes between His Majesty's Government in the Irish Free State and the Government of Salvador regarding Commercial Relations between the Irish Free State and Salvador |
| 14 September 1932 |
14 September 1932 |
Exchange of Notes Extending until September 15, 1933 the Provisional Commercial Agreement of August 8, 1931 |
| 22 September 1932 |
18 October 1932 |
Extension to Trans-Jordan of Extradition Treaty of 23 June 1891 |
| 23 August 1933 |
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Exchange of Notes Extending Until September 15, 1934 the Provisional Commercial Agreement of August 8, 1931 |
| 10 July 1934 |
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Exchange of Notes Prolonging the Modus Vivendi between the United Kingdom and Salvador of August 8, 1931, til September 16, 1935 |
| 13 September 1934 |
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Exchange of Notes between the Irish Free State and El Salvador concerning Prolongation of Modus Vivendi of September 12 and 30, 1931 for one year from November 1, 1934 |
| 7 May 1935 |
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Exchange of Notes regarding Commerce |
| 10 October 1935 |
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Exchange of Notes between the Irish Free State and Salvador Extending Until November 1, 1936 the Provisional Commercial Agreement of September 12/30, 1931 |
| 31 October 1935 |
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Exchange of Notes Extending Until December 16, 1936 the Provisional Commercial Agreement of August 8, 1931 |
| 22 July 1936 |
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Exchange of Notes between the United Kingdom and Salvador concerning Commerce - Prolongation of Modus Vivendi of August 8, 1931 until December 16, 1937 |
| 12 March 1937 |
8 April 1937 |
Exchange of Notes on the Extension to the British Solomon Islands and Zanzibar of the Extradition Treaty of June 23, 1881 |
| 2 November 1937 |
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Exchange of Notes between His Majesty's Government in Canada and the Government of Salvador regarding Commercial Relations |
| 2 November 1937 |
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Exchange of Notes between the United Kingdom and Salvador concerning Commercial Modus Vivendi - Extension from December 16, 1937 until June 15, 1939 |
| 17 April 1939 |
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Exchange of Notes extending the Exchange of Notes concerning Provisional Commercial Agreement of 8 August 1931 until 15 December 1940 |
| 23 September 1940 |
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Exchange of Notes Extending the Provisional Commercial Agreement of August 8, 1931 until December 15, 1941 |
| 14 October 1941 |
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Exchange of Notes further extending until December 15, 1942 the Provisional Commercial Agreement of August 8, 1931 |
| 4 September 1942 |
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Exchange of Notes Extending until December 15, 1943 the Provisional Commercial Agreement of August 8, 1931 |
| 9 December 1943 |
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Exchange of Notes between the United Kingdom and El Salvador concerning Commerce - Renewal of Modus Vivendi until December 15, 1944 |
| 24 October 1945 |
16 December 1945 |
Renewal of the Commercial Modus Vivendi of 8 August, 1931 between His Majesty's Government in the United Kingdom and the Government of Salvador |
| 20 August 1962 |
19 September 1962 |
Exchange of Notes between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of El Salvador regarding the Abolition of Visas |
| 20 June 1967 |
27 June 1968 |
Agreement on Technical Co-operation between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the Republic of El Salvador |
| 3 July 1968 |
10 July 1968 |
Exchange of Notes between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of El Salvador amending the Agreement of 20 August 1962 regarding the Abolition of Visas |