• Letter from Secretary, Royal Asiatic Society, to Treasurer, International Union of Orientalists, to send the Society's contribution, dated 7 October 1965.
• Letter from Treasurer, International Union of Orientalists, to Secretary, Royal Asiatic Society, to confirm receipt of the money, dated 14 October 1965.

Letter from Secretary, Royal Asiatic Society, to Treasurer, International Union of Orientalists, to send the Society's contribution, dated 24 October 1966.

• Letter to Sir Harold Bailey to inquire whether Louis Bazin is still the Treasurer of the International Union of Orientalists, dated 20 February 1968.
• Letter from Secretary, Royal Asiatic Society, to Treasurer, International Union of Orientalists, to send the Society's contribution, dated February 1968.

• Letter from International Union of Orientalists to Sir Harold Bailey to announce the General Assembly of the Union on 16 July 1973, dated 25 June 1973.
• Letter from Sir Harold Bailey to Professor Stuart Simmonds to state that he will be unable to attend the Assembly but that it would be good to have a representative from the Society at the meeting, dated 2 July 1973.

• Letter from Treasurer, International Union of Orientalists, to Royal Asiatic Society to ask for the membership dues not yet received for 1972, dated 10 February 1973.
• Letter from Secretary, Royal Asiatic Society, to Treasurer, International Union of Orientalists, to send money due, dated 27 February 1973.

• Letter from Treasurer, International Union for Oriental and Asian Studies, to Royal Asiatic Society to ask for the membership dues for 1974, dated 26 September 1974.
• Letter from Secretary, Royal Asiatic Society, to Treasurer, International Union for Oriental and Asian Studies, to send money due, dated 22 October 1974.

• Letter from Treasurer, International Union for Oriental and Asian Studies, to Dr. A.D.H. Bivar, Royal Asiatic Society, to ask for membership dues; to inform regarding the appointment of the Vice-President of the Union as President of the International Council for Philosophy and Humanistic Studies; to bring to attention that UNESCO were preparing contracts with the Union for research; and to give dates of the forthcoming General Assembly in Mexico City in 1976. Dated 6 November 1975.
• Letter from Secretary, Royal Asiatic Society, to Treasurer, International Union for Oriental and Asian Studies, to submit the Society's membership fees for 1975, and to ask further details of the contracts for research being prepared by UNESCO. Dated 12 January 1976.
• Letter from Treasurer, International Union for Oriental and Asian Studies, to Royal Asiatic Society to thank for membership fees and to give more information regarding the research contracts. Dated 21 January 1976.

• Letter from Treasurer, International Union for Oriental and Asian Studies, to Royal Asiatic Society to ask for membership dues and to send a report from the Secretary General and amended statutes, dated 29 November 1976. A copy of the statutes is with the letter.
• Letter from Secretary, Royal Asiatic Society, to send membership dues, dated 14 December 1976.

• Letter from Treasurer, International Union for Oriental and Asian Studies, to Royal Asiatic Society to ask for membership dues, dated 28 September 1977.
• Letter from Secretary, Royal Asiatic Society, to Treasurer, International Union for Oriental and Asian Studies, to inform that at the last Council meeting of the Society it was decided that the Society wished to tender its resignation from the International Union for Oriental and Asian Studies, dated 15 November 1977.

The 8th International Congress of Orientalists was held in Stockholm and Christiania in 1889. Material from this conference is:

• "Menu du Diner Offert au VIII Congrès International des Orientalistes, Stockholm Le 7 Sept 1889" - Colour, printed pamphlet with a dinner menu in French, followed by poems in multiple languages and translations in either English, French or German, each dedicated to one of the courses.
• Silver and enamelled drinking horn presented by the King of Sweden to the Congress. Within original presentation case.
• Note describing the drinking horn and quoting an extract from the Journal of the Royal Asiatic Society 1902, when it was recorded that the horn should be kept at the Society.
• Two copies of the pamphlet "Quousque Tandem? Der Achte Internationale Orientalisten-Congress: Und Der Neunte? Eine Zusammenstellung von Albr. Weber" - Printed in Berlin, 1891.