The International Union of Orientalists was founded in September 1951 in Istanbul at the International Congress of Orientalists. It was renamed in 1973 as the International Union for Oriental and Asian Studies. This material covers the interaction of the Royal Asiatic Society with the Union in the time period 1951-1977.

Letter from Professor Dr. Zeki Velidi Togan, President of Organising Committee of XXIInd International Congress of Orientalists, to the Royal Asiatic Society to send a draft of the statutes for the International Union of Orientalists and to state that the foundation of the proposed Union will be dealt with a the meeting of the Congress in Istanbul.

Letter from Hamilton Gibb to Mrs Davis, Secretary, Royal Asiatic Society, to state that due to lack of a subvention by UNESCO towards the cost of a General Assembly of the Union, it has been decided to postpone the meeting.

Letter from Hamilton Gibb to Mrs Davis, Secretary, Royal Asiatic Society, to state that it would be improper for him to be the Royal Asiatic Society's representative as he is one of the representatives of the International Congress. However, in the nebulous situation concerning the International Union, he would agree to undertake the role.

Minutes of the General Assembly of the International Union of Orientalists held in Munich in 1957 and a subsequent circular.

Letter from Albrecht Goetze to George Morgenstierne in which he reports from a meeting of the American Oriental Society and the Association of Asiatic Studies on the problems connected with the Congress to be held at New Delhi.

Letter from Professor Georg Morgenstierne, President of International Union of Orientalists, to President, Royal Asiatic Society, to inform that the next General Assembly of the Union would be held at the International Congress of Orientalists in New Delhi on 6 January 1964, and to ask for the Society to nominate a representative. A handwritten copy of the reply has been added to this letter stating that the Society has nominated Dr Allchin, who has succeeded Dr Sinor.

Letter from Jean d'Ormesson, Secretary-General, International Council for Philosophy and Humanistic Studies, to Helmuth Scheel, Secretary-General, International Union of Orientalists expressing his concerns regarding the Union.

Letter from Secretary, Royal Asiatic Society, to Dr. Helmut Scheel, Secretary-General, International Union of Orientalists, to inform that Professor Sir Harold Bailey will be the Society's representative on the International Union of Orientalists.

Administrative correspondence between the Royal Asiatic Society and the International Union of Orientalists/ International Union for Oriental and Asian Studies in the time period 1965-1977.