Nomination of candidates

• U Thant (Burma)
• Mongi Slim (Tunisia)

Recommendation of the Security Council

Official documents

• Security Council resolution 168 (1961)  
• S/PV.972: Official communiqué of the 972nd (closed) meeting of the Security Council, 3 November 1961  

Communication of recommendation to the General Assembly

Official document

• Letter dated 3 November 1961 from the President of the Security Council addressed to the President of the General Assembly (A/4953)  
• Letter dated 30 November 1962 from the President of the Security Council addressed to the President of the General Assembly (A/5322)  

Appointment by the General Assembly

Official documents

• General Assembly resolution 1640 (XVI): Appointment of the Secretary-General of the United Nations  
• A/PV.1046: Official record, 1046th plenary meeting of the 16th session of the General Assembly, 3 November 1961  
• General Assembly resolution 1771 (XVII): Appointment of the Secretary-General of the United Nations  
• A/PV.1182: Official record, 1182nd plenary meeting of the 17th session of the General Assembly, 30 November 1962  

Nomination of candidates

• U Thant (Burma)

Recommendation of the Security Council

Official documents

• Security Council resolution 227 (1966)
• S/PV.1311: Official communiqué of the 1311th (closed) meeting of the Security Council, 28 October 1966  
• Security Council resolution 229 (1966)
• S.PV.1329: Official communiqué of the 1329th (closed) meeting of the Security Council, 2 December 1966  

Communication of recommendation to the General Assembly

Official document

• Letter dated 28 October 1966 from the President of the Security Council addressed to the President of the General Assembly (A/6490)  
• Letter dated 2 December 1966 from the President of the Security Council addressed to the President of the General Assembly (A/6540)  

Appointment by the General Assembly

Official documents

• General Assembly resolution 2147 (XXI): Appointment of the Secretary-General of the United Nations  
• A/PV.1455: Official record, 1455th plenary meeting of the 21st session of the General Assembly, 1 November 1966  
• General Assembly resolution 2161 (XXI): Appointment of the Secretary-General of the United Nations  
• A/PV.1483: Official record, 1483rd plenary meeting of the 21st session of the General Assembly, 2 December 1966