Material from the interaction of the Siam Society and the Royal Asiatic Society. These are:

• Letter from the President, Royal Asiatic Society, to H.H. Prince Dhani Nivat, President, Siam Society, to congratulate the Siam Society on its Jubilee. Typed, dated 18 February 1954.
• "Siam Society - 75 years" - printed pamphlet produced to mark the 75th anniversary of the Siam Society in 1979.
• Letter from D.J. Duncanson, Director, Royal Asiatic Society, to The President, Siam Society, to send the commemorative publication celebrating 150 years of the Royal Asiatic Society. Typed, dated 27 May 1980.

Letter from Stuart Simmonds, President, Royal Asaitic Society, to Phil, School of Oriental and African Studies, to thank him for SOAS agreeing to host the Symposium and to ask whether they might also host a Sherry reception for the participants, dated 19 July 1973. Further correspondence accepting the invitation to the Sherry reception held at the Committee Room, School of Oriental and African Studies, on 24 July 1973. These are from Dr. R.D. Barnett, Mr G.A. Calver, Mr & Mrs J.T. Hooker, Professor and Mrs C.F. Beckingham, Sir Mortimer Wheeler, and Mrs J.M. Witt.

Material concerned with the Sesquicentenary Reception held on 19 February 1972 with Her Majesty the Queen and HRH The Duke of Edinburgh in attendance.

Material concerning the Royal Asiatic Society's Sesquicentenary Dinner held on 25th October 1973 at the Merchant Taylors' Hall.

"Seconde Session de La Fédération des Sociétés Orientales tenue à Paris du 6 au 8 Juillet 1920". Printed programme for the conference between the Société Asiatique, the Royal Asiatic Society and the American Oriental Society. Two copies.

Two versions of the seating plan for the Sesquicentenary Dinner, one dated 22 October and the other, amended 23 October.

As part of the Sesquicentenary several Fellows went to give lectures at schools. This series contains administrative material and correspondence concerned with these lectures.

The contract between the Royal Asiatic Society and Schmidt Periodicals GmbH for non-exclusive rights to reprint Series 1-3 of the Journal, dated 5 September 1984, and associated correspondence and Statements of Royalties covering the period from 1984 -2003. Correspondents include Valery Gibson, Gordon Claver and Dennis Duncanson for the Royal Asiatic Society and Gerhard Schmidt for Schmidt Periodicals.

In 1987 the Society looked to release itself from the lease for 56 Queen Anne Street. The lease was bought back from the Society by Howard de Walden Estates for £430,000. This series contains correspondence regarding the sale of the lease for 56 Queen Anne Street. This correspondence includes that with the Howard de Walden Estates, solicitors, the building surveyors, Morton-Smith & Co., and Charity Commissioners.

In 2004, Chesterton Ltd. were instructed to provide a marketing report and advice on the disposal of 60 Queen's Gardens. This material contains correspondence between Chesterton and the Royal Asiatic Society, dated 11 May 2004- 25 November 2004. The material also contains correspondence between the Society and Manches LLP who sold the property to The Jordanian Book Centre, dated 11 March 2005-26 August 2005, when both sale of the Queen's Garden property and purchase of 14 Stephenson Way were complete.