The Royal Asiatic Society of Sri Lanka was incorporated soon after its foundation as an affiliated society to the Royal Asiatic Society of Great Britain and Ireland. This material covers some of the interaction between the two societies. These are:

• "The 125th Anniversary of The Royal Asiatic Society (Ceylon Branch)" by P.R. Sittampalam, Honorary Secretary - photocopy of an article from the Journal of the Ceylon Branch of the Royal Asiatic Society.
• Letter from Kunst and Wissen, Germany, to the Royal Asiatic Society to ask the address of the publishers of the the Journal of the Ceylon Branch of the Royal Asiatic Society. Typed, dated 16 April 1970.
• Letter from F. Sprangers, Belguim, to Royal Asiatic Society asking for a sample issue of the Journal of the Royal Asiatic Society (Ceylon Branch). Handwritten, dated August 1974. Also the reply from Royal Asiatic Society to give address of the Ceylon Branch. Typed, dated 9 September 1974.
• Letter from Audrey Meenan, Serials Department, British Library, to Miss Crawford, Secretary, Royal Asiatic Society, to ask for confirmation of the address of the Ceylon Branch of the Royal Asiatic Society. Typed, dated 24 July 1976.
• Letter from Wilfred M. Gunasekara, Honorary Joint Secretary, Royal Asiatic Society (Sri Lanka Branch), to the President, Royal Asiatic Society, to thank for the donation of the book, "The Royal Asiatic Society - Its History and Treasures". Typed, dated 25 September 1980.
• Letter from Faxon to the Royal Asiatic Society to ask concerning the address of the Royal Asiatic Society, Sri Lanka Branch. Typed, dated 16 December 1983.
• Letter from Wilfred M. Gunasekara, Honorary Joint Secretary, Royal Asiatic Society (Sri Lanka Branch), to the Secretary, Royal Asiatic Society, to ask for a copy of the letter of incorporation of the Ceylon Branch. Typed, dated 13 January 1985. With this is a copy of the reply to state that no letter is in existence and also the Minutes books are temporarily in store while the Society's buildings are being renovated. Handwritten, dated 31 January 1985.
• Letters expressing concern regarding the possible new incorporation of the Royal Asiatic Society (Sri Lanka Branch) with the Royal Asiatic Society from H. W. Weeraratne, dated 16 November 1985; Harold Weevaratne, dated 21 November 1985; and H.W. Weeraratne, dated 9 December 1985.
• Letter from the Honorary President, Royal Asiatic Society Sri Lanka Branch, to the Honorary Secretary, Royal Asiatic Society, to inform that the incorporation will entail the name of the Society becoming the Royal Asiatic Society of Sri Lanka. Typed, dated 22 January 1986.
• Letter from the Honorary Joint Secretary, Royal Asiatic Society of Sri Lanka, to the Secretary, Royal Asiatic Society, to inform of the dispatch of two publications as complimentary copies for the Royal Asiatic Society. Typed, dated 20 June 1990.
• Correspondence between Michael Pollock, Librarian, Royal Asiatic Society, and Dr Somapala Jayawardhana, Honorary Joint Secretary, Royal Asiatic Society of Sri Lanka, concerning copies of the Journal of Royal Asiatic Society of Sri Lanka for the Royal Asiatic Society's Collections. Nine letters, typed, dated from 18 May 1992 - 7 September 1993. Also 4 postcards of receipt.
• Correspondence between Michael Pollock, Librarian, Royal Asiatic Society, and B.E. Wijesuriya, Administrative Assistant for the Honorary Treasurer, Royal Asiatic Society of Sri Lanka, concerning obtaining copies of the Sesquicentennial Commemorative Volume of the Royal Asiatic Society of Sri Lanka. Two letters, typed, dated 25 April - 30 May 1995. With these letters is a printed pamphlet advertising the Commemorative Volume.
• Letter from Michael Pollock, Librarian, Royal Asiatic Society, to G.P.S.H. de Silva, Secretary, Royal Asiatic Society of Sri Lanka, to inform of the death of Professor Charles Fraser Beckingham, who was an Honorary Fellow of the Royal Asiatic Society of Sri Lanka. Typed, dated 12 November 1998.
• Correspondence concerning the visit of Mr R. Wijedasa of the Royal Asiatic Society of Sri Lanka to the Royal Asiatic Society. Four letters, typed, dated 18 May 2003 - 30 July 2003.

Established as the Shanghai Literary and Scientific Society, in 1857, the Society became affiliated to the Royal Asiatic Society the following year, becoming the Royal Asiatic Society (North China Branch). This material was collated in the interaction of the two Societies; the closure of the North China Branch and subsequent questions regarding it closure; and in its reopening and re-establishing links with the Royal Asiatic Society.

These papers were collated in the interaction of the Malaysian Branch of the Royal Asiatic Society with the Royal Asiatic Society of Great Britain and Ireland.

• "MBRAS Newsletter" for June 1996 giving details of forthcoming events and publications.
• "MBRAS Newsletter" for December 1997 giving news of the Society.

• Correspondence from D.K Bassett, University of Malaya in Kuala Lumpar, to Richard Winstedt, President, Royal Asiatic Society. Two typed letters, dated 30 July 1962, one to inform of proposed change of name of the Malayan Branch and to ask regarding legal clarification of the designation, "Royal"; the second regarding an article of Bassett's published in the Journal of the Royal Asiatic Society on the East India Company in Cambodia.
• Correspondence between the Secretaries of the two Societies concerning reciprocal member privileges. Two letters, typed, dated 30 January-17 July 1967.
• Correspondence concerning the exchange of the Journals of the two Societies. Three letters, typed with handwritten inserts and typed, dated 28 February 1969-1 August 1969.
• Newspaper cutting from the Daily Telegraph, entitled "Slow Police" concerning a history of the Malayan police in the Journal of the Malayan Branch, dated 26 April 1969.
• Correspondence between Jennifer M. Scarce, Assistant Keeper, The Royal Scottish Museum, Edinburgh, and Diana Crawford, Secretary, Royal Asiatic Society, concerning locating an article from the Journal of the Malaysian Branch of the Royal Asiatic Society. Two letters, typed, dated 20 May-29 May 1969.
• Correspondence between Rayner Norton and the Secretary of the Royal Asiatic Society regarding obtaining an article from the Journal of the Malaysian Branch. Two letters, handwritten and typed, dated 3 May-9 June 1970.

• Correspondence between Michael R. Dove and Diana Crawford, Secretary, Royal Asiatic Society concerning possible subscription to the Journal of the Malaysian Branch of the Royal Asiatic Society. Two letters, handwritten and typed, dated 10 May-16 May 1973.
• Correspondence between Maxwell Scientific International and the Royal Asiatic Society concerning shipment of Journals of the Malaysian Branch to the University of Alberta. Two letters plus copy of invoice, letters dated 8 March-26 March 1974.
• Correspondence between Victor King, University of Hull, and Secretary, Royal Asiatic Society, concerning becoming a member of the Malaysian Branch. Two letters, typed, dated 14 May-29 May 1974.
• Correspondence between G. Rosenberg, British Library, and the Secretary, Royal Asiatic Society, concerning obtaining copies of the Journal of the Malaysian Branch. Two letters, typed, dated 30 September-16 October 1974.
• Correspondence between the University of New Zealand and the Royal Asiatic Society concerning obtaining a copy of the Index of the Journal of the Malaysian Branch. Two letters, typed, dated 5 June-18 June 1975.
• Correspondence between W.E. Saarbach GMBH and Royal Asiatic Society concerning obtaining copies of the Journal of the Malaysian Branch. Two letters, typed, dated 6 June-24 June 1975.
• Correspondence between Paul de Wilde and Secretary, Royal Asiatic Society, concerning contents of the Journal of the Malaysian Branch. Two letters, typed, dated 25 September-1 October 1975.
• Correspondence between Tan Sri Datuk Haji Mubin Sheppard, Honorary Secretary, Malaysian Branch, and Diana Crawford, Secretary, Royal Asiatic Society, concerning the change of Sheppard's title for the Society's records and the current address of the Asiatic Society of Bengal. Two letters, typed, dated 25 December 1975-15 January 1976.

• Correspondence between Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, and Diana Crawford, Secretary, Royal Asiatic Society, concerning the forthcoming centenary of the Malaysian Branch and requests to find information regarding the affiliation of the Society within the Royal Asiatic Society's records. Five letters, typed, dated 1 September-30 December 1976.
• Correspondence between the Librarian, Flinders University of South Australia, and the Secretary, Royal Asiatic Society, concerning obtaining microfilm of the Journal of the Malaysian Branch. Two letters, typed, dated 2 May-17 May 1977.
• Correspondence between Svets Book Services and the Royal Asiatic Society concerning the address of the Malaysian Branch. Two letters, typed, dated 17 June-24 June 1977.
• Copy of a letter to all Members of the Malaysian Branch from Tan Sri Datuk Mubin Sheppard, Honorary Secretary, concerning consideration of a change of name for the Society. Typed, dated 1 July 1977.
• Correspondence between Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, and the Secretary and President, Royal Asiatic Society, concerning the centenary celebration of the Malaysian Branch. Five letters, typed, dated 21 September-27 December 1977.
• Correspondence between Vice-Admiral Sir Peter Cazalet and Secretary, Royal Asiatic Society, concerning the Centenary Volume of the Journal of the Malaysian Branch. Two letters, handwritten and typed, dated 19 November -25 November 1977.
• Letter from E.V. Gibson, Secretary, Royal Asiatic Society, to the Honorary Secretary, Malaysian Branch, to thank for providing their up-to-date details for enclosure in the Society's Journal. Typed, dated 19 September 1978.
• Correspondence between Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, and E.V. Gibson, Secretary, Royal Asiatic Society, to ask concerning the current status of the Asiatic Society of Bengal. Two letters, typed, dated 25 January-13 February 1979.

• Correspondence between Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, and Dennis Duncanson, President, Royal Asiatic Society, concerning representation of the Malaysian branch at the forthcoming celebrations of the 106th anniversary of the Royal Asiatic Society. Six letters, typed, dated 6 October 1982-10 March 1983.
• Letter from Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, to Dennis Duncanson, President, Royal Asiatic Society, concerning the request from the Chairman of the Penang Museums Board for the presentation by the Royal Asiatic Society of the painting, "A View of Flag Staff Point on Prince of Wales Island taken on board the Viper Snow, 22nd October 1787." Typed, with copy of image, dated 17 January 1984.
• Letter from Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, to E.V. Gibson, Secretary, Royal Asiatic Society, to thank for the information which unfortunately arrived too late to be included in the current issue of the Journal. Typed, dated 25 June 1985.

• Correspondence between Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, and the Secretary, Royal Asiatic Society, regarding the exchange of advertisements for the Societies in each Society's Journal. Five letters, typed, dated 5 December 1986-30 July 1987.
• Correspondence between Tan Sri Datuk Mubin Sheppard, Honorary Secretary, Malaysian Branch, and the Secretary, Royal Asiatic Society, regarding the change of address of the Malaysian Branch. Two letters, typed, dated 5 February-16 February 1988.
• "The Malaysian Branch of the Royal Asiatic Society. A Complete List of Members of the MBRAS on 1st December 1989". Printed pamphlet.

This material was collated in the interactions between the Asiatic Society of Japan and the Royal Asiatic Society.