Correspondence concerned with delegates attending the Congress. These are:

• Letter from Hans R. Roemer, Deutsche MorgenLandische Gesellschaft, to the Royal Asiatic Society to inform of delegates coming to the Congress. Typed, dated 6 July 1954.
• Letter from Meer S. Basri to Mrs Davis, Royal Asiatic Society, to ask for a confirmatory letter of his attendance at the Congress so he may obtain a visa. Typed, dated 14 July 1954.
• Letter from Denis Sinor, Organising Committee, to Mrs Davis, Royal Asiatic Society, concerning leaflets advertising the Congress and her offer of help for the Congress. Typed, dated 21 July 1954.
• Letter from Secretary, Royal Asiatic Society, to the Permanent Under-Secretary of State, to confirm Meer S. Basri's attendance at the Congress. Typed, dated 22 July 1954.
• Letter from Vivian Gaster to Royal Asiatic Society to ask to become a member of the Congress. Handwritten, dated 1 August 1954.
• Letter from Meer S. Basri to Mrs Davis, Royal Asiatic Society, to inform that he has obtained his visa. Handwritten, dated 16 August 1954.
• Letter from President, Royal Asiatic Society, to delegates at the Congress to invite them to become members of the Royal Asiatic Society. Typed, undated.

Correspondence regarding the publication of the Proceedings of the 23rd Congress. These are:

• Letter from Denis Sinor to Richard Winstedt to inform him that the Proceedings of the Congress would soon be published and that the Royal Asiatic Society will be given the remainders free of charge. He asks whether the Society would wish to purchase more copies. Typed, dated 23 January 1957.
• Letter from Denis Sinor to Richard Winstedt to thank for his reply and to state he has ordered the extra copies. Typed, dated 28 January 1957.
• Letter from H. Sarkar, Organising Committee, 26th International Congress of Orientalists, to Secretary, Royal Asiatic Society, to enquire regarding sales of the Proceedings of the 23rd International Congress. Typed, dated 27 August 1966.
• Letter from Secretary, Royal Asiatic Society, to H. Sarkar, Organising Committee, 26th International Congress of Orientalists, to provide the information he requested. Typed, dated 16 September 1966.
• Letter from H. Sarkar, Organising Committee, 26th International Congress of Orientalists, to Secretary, Royal Asiatic Society, to thank for the information provided. Typed, dated 26 September 1966.
• Letter from W. Heffer and Sons Ltd. to Royal Asiatic Society to enquire regarding the numbers of copies of the Proceedings that were published. Typed, dated 16 September 1966.
• Letter from W. Heffer and Sons Ltd. to Royal Asiatic Society to thank for the information provided and to supply their own figures regarding printing. Typed, dated 20 September 1966.
• Letter from Secretary, Royal Asiatic Society, to H. Sarkar, Organising Committee, 26th International Congress of Orientalists, to supply further information regarding the printing of the Proceedings. Typed, dated 21 September 1966.
• Letter from Erik E. Christy to President, Royal Asiatic Society, to enquire whether lectures on China given at the 23rd Congress were printed in the Proceedings. Typed, dated 27 February 1985.
• Letter from Dennis Duncanson, President, Royal Asiatic society, to Dr Erik E Christy to suggest that he contacts Professor Denis Sinor who may be able to help with his enquiry. Typed, dated 9 March 1985.

The 25th International Congress of Orientalists was held in Moscow in August 1960. The material associated with this Congress is:

• First Circular for the XXVth International Congress of Orientalists from B.G. Gafurov, Chairman, and I.M. Diakonoff, Secretary, Organising Committee, giving details of the dates and sections for the Congress. Printed in Russian and English, undated.
• Second Circular from the Organising Committee to give further organisational information regarding the Congress. Printed in Russian and English, undated. With the circular is an application form for attendance at the Congress, also printed in Russian and English.
• Announcement from the Royal Asiatic Society of the 25th International Congress with the sections and registration fee. Printed, dated September 1959.
• Application form to attend the Congress. Printed in Russian and English, undated.
• Notice of flights to and hotels in Moscow. Typed with handwritten annotations, undated.
• List of British delegates for the Congress. Typed, undated.
• Letter from the International Union of Orientalists to the Royal Asiatic Society to invite the Society to take part in the General Assembly at the forthcoming Congress. Typed, dated 8 July 1960.
• Letter from Denis Sinor to Mrs Davis, Royal Asiatic Society, to ask her to make sure that the Society's subscription is paid to the International Union of Orientalists. Typed, dated 11 July 1960.

The 26th International Congress of Orientalists was held in New Delhi in 1963. These papers concern preparatory organisation. They are:

• Letter from the International Union of Orientalists to the Royal Asiatic Society to enclose the minutes of their meeting in Tokyo, October 1961, and the statutes of the Union. They ask for the Society's to remit their quota to enable the work towards the next Congress. Typed, dated 3 May 1962.
• Letter from the International Union of Orientalists to the Royal Asiatic Society to follow up on their letter of 3 May as they had not yet received a reply from the Society. Typed, dated 3 July 1962.

The 27th International Congress of Orientalists was held in Ann Arbor, Michigan, USA, in August 1967. The material concerned with this Congress includes administrative correspondence and organisation for the drinking horn (see RAS ICO/1) to be at the Congress.

Administrative material for the Congress. These are:

• Letter from Edwin Yamauchi, Rutgers University, to Secretary, Royal Asiatic Society, to ask for details of the time and place of the next International Congress of Orientalists and to ask regarding details of the Lidzbarski Medal. Typed, dated 28 November 1965.
• Letter from Secretary, Royal Asiatic Society, to Edwin Yamauchi, Rutgers University, to inform him that the next Congress would be held at the University of Michigan on 13 August 1967 for which the Secretary-General is Professor R.H. Fifield. Particulars for the medal could be obtained from Professor A.J. Arberry. Typed, dated 6 December 1965.
• "XXVII International Congress of Orientalists" invitation and first announcement. Printed, dated January 1966.
• Letter from O.W. Wolters to Richard Winstedt to ask it he would be willing to present a paper at the 27th Congress. Typed, dated 1 June 1966.
• Letter from Secretary, Royal Asiatic Society to O.W. Wolters to inform him of the death of Sir Richard Winstedt. Typed, dated 16 June 1966.
• Letter from Russell H. Fifield, Secretary-General, Organising Committee, to Royal Asiatic Society to invite the Society to be officially represented at the Congress. Typed, dated 7 October 1966.
• Letter from Jean Filliozat, Societé Asiatique, to Norman Brown, President, XXVIIth International Congress, to report on the discussion with his colleagues of the proposals to revise the statutes of the congress. Typed, dated 9 May 1967.
• Letter from Secretary, Royal Asiatic Society, to Secretary-General, XXVIIth International Congress, to inform of the Society's official representatives. Typed, dated 15 June 1967.
• Correspondence between Professor D.C. Twitchett and Royal Asiatic Society regarding him being an official representative of the Society at the Congress. Three letters, typed, dated 15 June - 14 July 1967.
• Letters to John Burton-Page and R.J. Loewe from Secretary, Royal Asiatic Society, to enclose the delegate form for the Congress. Two letters, typed, dated 14 July 1967.
• Delegate certificate for V.L. Ménage from the Royal Asiatic Society for the XXVIIth International Congress. Printed with typed inserts, undated.

Correspondence regarding the attendance of the drinking horn presented by the King of Sweden in 1899 at the Stockholm Congress. These are:

• Letter from the Secretary, Royal Asiatic Society, to The Keeper, Department of Conservation, Victoria & Albert Museum, to ask his advice regarding repairs to the drinking horn. Typed, dated 13 March 1967.
• Letter from N.S. Brommelle, Keeper, Department of Conservation, Victoria & Albert Museum, to Secretary, Royal Asiatic Society, to ask to see the drinking horn in order to advise regarding repairs. Typed with handwritten annotations, dated 17 March 1967.
• Letter from the Secretary, Royal Asiatic Society, to Mr Beecher, Department of Conservation, Victoria & Albert Museum, to ask for the repairs to be undertaken. Typed, dated 18 May 1967.
• Letter from the Secretary, Royal Asiatic Society, to Mr Beecher, Department of Conservation, Victoria & Albert Museum, to send the receipt for the repairs undertaken. Typed, dated 6 June 1967.
• Letter from Secretary, Royal Asiatic Society, to Phoenix Assurance Co. Ltd. to ask for cover for the drinking horn during its time in Ann Arbor in the custody of Mr. H.L. Shorto. Typed, dated 18 July 1967.
• Letter from Phoenix Assurance Co. Ltd. to Secretary, Royal Asiatic Society, to enclose the Policy for cover of the drinking horn. Typed, dated 27 July 1967. The policy is with this letter.

The 28th International Congress of Orientalists was held in Canberra, Australia, in January 1971. The material within these papers includes administrative correspondence, possibilities of affinity flights and transport of the drinking horn. The administrative correspondence is:

• Letter from A.L. Basham to Secretary, Royal Asiatic Society, to send his subscription and to inform that the Society would soon be receiving its official announcement of the 28th Congress. Handwritten, dated 29 May 1969.
• Letter from Rafe de Crespigny, Secretary-General, International Congress, to send the Announcement and Poster for the 28th Congress. Typed, undated. The printed Announcement is with the letter.
• Letter from Secretary, Royal Asiatic Society, to Rafe de Crespigny, Secretary-General, International Congress, to thank for the Announcement and to suggest he contacts A.L. Basham for further help. Typed, dated 5 November 1969.
• Letter from Jean Filliozat to Royal Asiatic Society to state that he would ensure their letter is delivered. Handwritten in French, dated 17 March 1970.
• Letter from Rafe de Crespigny, Secretary-General, International Congress, to Secretary, Royal Asiatic Society, to ask if the Society could give any help with arranging affinity flights to the Congress. Typed, dated 10 March 1970.
• Letter from Secretary, Royal Asiatic Society, to Sir Harold Bailey to ask his advice on the Secretary-General's letter and the Society's involvement in organising transport. Typed, dated 24 March 1970.
• Letter from Secretary, Royal Asiatic Society, to Rafe de Crespigny, Secretary-General, International Congress, to confirm their support for the Congress and to ask regarding arrangements for hospitality in Australia. Typed, dated 13 April 1970.
• Second Invitation and Enclosures for the 28th International Congress. Printed material, undated.
• Notice from Secretary, Royal Asiatic Society, to fellows to ask whether they would be interested in subscribing to charter or affinity flights for the conference. Typed, dated April 1970.
• Letter from Rafe de Crespigny, Secretary-General, International Congress, to Secretary, Royal Asiatic Society, to thank for the support and provide information regarding accommodation in Halls of residence. Typed, dated 20 April 1970.
• Letter from L.P. Elwell-Sutton to Secretary, Royal Asiatic Society, to ask to be kept informed regarding flights. Typed, dated 26 May 1970.
• Letter from Rafe de Crespigny, Secretary-General, International Congress, to Secretary, Royal Asiatic Society, to send a list of delegates. Typed, dated 8 June 1970. With this letter is an Alphabetical List of Delegates from U.K. and Ireland. Computer generated, dated 28 May 1970.
• Letter from Rafe de Crespigny, Secretary-General, International Congress, to D.W. Anthony, British Association of Orientalists, regarding the possibility of proposed shared flights. Typed, dated 10 July 1970.
• Correspondence between Henry G. Schwarz and Secretary, Royal Asiatic Society, concerning the possibility of affinity flights. Two letters, typed, dated 25 July - 6 August 1970.
• Letter from Professor S. Morag to Dr Anthony concerning the possibility of affinity flights. Typed, dated 31 July 1970.
• Correspondence between Professor J. Aquilina and Secretary, Royal Asiatic society, concerning affinity flights. Two letters, typed, dated 20 August-2 September 1970.
• Letter from M. Gatehouse to Secretary, Royal Asiatic Society regarding the tightened regulations for affinity flights. Typed, dated 8 September 1970.
• Correspondence between L.S. Leshnik and the Royal Asiatic society concerning the possibility of affinity or group flights. Two letters, typed, dated 16 November - 27 November 1970.
• Correspondence between Louis Allen and Royal Asiatic Society regarding affinity flights. Two letters, typed, dated 23 November - 27 November 1970.
• Correspondence between Professor S. Morag and the Secretary, Royal Asiatic Society, concerning the possibility of affinity flights and that one would not be happening. Two letters, handwritten and typed, dated 30 November - 29 December 1970.

There is further correspondence with W.F. & R.K. Swan (Hellenic Ltd.), Qantas, Kearsley Travel, Thomas Cook and Son Ltd., and Trans-Australia Airlines regarding the possibilities of organising an affinity flight. Nine items, typed, dated 8 June - 13 November 1970.

Correspondence regarding the drinking horn is:

• Letter from Mary Hutchinson, the Australian National University, to Miss Crawford, Secretary, Royal Asiatic Society, to ask on behalf of Professor Basham the whereabouts of the drinking horn and whether it might be possible for it to be present at the Canberra Congress. Typed, dated 27 October 1970.
• Letter from Sun Alliance & London Insurance Group to confirm that the drinking horn will be insured whilst in transit to Canberra. Typed, dated 11 December 1970.
• Letter from Miss Crawford, Secretary, Royal Asiatic Society, to Mary Hutchinson, the Australian National University, to inform that the drinking horn is at the Royal Asiatic society and that Professor E.H.S. Simmonds will be bringing it to the Congress. Typed, dated 14 December 1970.
• Insurance policy from The Westminster Fire Office for the drinking horn. Printed with typed inserts, dated 15 December 1970.
• Statement from B.W. Robinson to state that the drinking horn is being taken by Simmonds to the Congress and will be returned to the United Kingdom afterwards. Typed, dated 16 December 1970.
• Letter from Secretary, Royal Asiatic Society, to Sun Alliance & London Assurance Group to enclose a cheque to cover the insurance of the drinking horn. Typed, dated 21 December 1970

For the 30th Congress the title was changed to the International Congress of Human Sciences in Asia and North Africa. The Congress was held in Mexico City in August 1976. Material concerned with this Congress is:

• Letter from Marion Evans, Superintendent, Congress & Inclusive Tours, Lufthansa, to send the preliminary announcement and poster for the 30th International Congress of Human Sciences in Asia and North Africa. Typed, dated 11 March 1975.
• First Invitation to the Congress giving details of the sections, papers, trips and registration. Printed in Spanish, English and French, undated.
• Poster for the 30th Congress. Printed in Spanish, English and French, undated.
• Letters from Sabena Airlines and CP Air to the Royal Asiatic Society offering assistance in travel arrangements to the Congress. Two letters, typed, dated 20-23 May 1975.
• Letter from Jorge Alberto Lozoya, Secretary General, 30th Congress, to Royal Asiatic Society to ask whether the Society would assist in coordinating travel for groups of scholars to the Congress. Typed, dated 14 November 1975.
• Provisional Registration Form for the Congress. Printed in Spanish, English and French, undated, with accompanying envelope.
• Correspondence between Mrs J. Makowiecka and Mrs Crawford, Secretary, Royal Asiatic Society, concerning the contact details for the 30th Congress. Two letters, handwritten and typed, dated 11-15 December 1975.
• Correspondence between Dr J.G. de Casparis and Mrs Crawford, Secretary, Royal Asiatic Society, concerning Casparis being the Society's official representative at the Congress. Two letters, typed, dated 2-11 July 1976.
• Letter from L. Bazin, Secretary-General, International Union for Oriental and Asian Studies, to send the updated Constitution of the Union after the General Assembly held at the Mexico Congress. Typed in French with printed constitution in English and French, undated.

The Congress name was subsequently altered to the International Congress of North African and Asian Studies. The 34th Congress was held in Hong Kong in August 1993. The material associated with this Congress is:

• Correspondence between Gyorgy Hazai, Secretary-General, International Union for Oriental and Asian Studies, and A.D.H. Bivar, President, Royal Asiatic Society, concerning the Society's representation at the Congress in Hong Kong and points for the Agenda for the meeting of the Union to be held there. Two letters, dated 17 May - 2 June 1993.