"Royal Asiatic Society 150th Anniversary Year, 1823-1973, Calendar of Events". List of events, some annotated with supplementary events and changes to the programme.

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

Organisational Lists and Letters for Sesquicentenary Reception. These are:

• "Reception - Monday 19th February 1973" - lists of guests at the Reception and duties of members of the Society in overseeing the event, 6 pieces, typed with annotations.
• "Press Arrangements - Miss Anne Hawkins" - arrangements and queries concerning the needs of the press, 1 piece, typed with handwritten annotations.
• "Programme & Time-table for the visit of Her Majesty the Queen & His Royal Highness the Duke of Edinburgh to the Royal Asiatic Society on Monday 19th February 1973", typed list.
• "The City of Westminster Civic Protocol" listing the protocol for functions at which the Lord Mayor and Lady Mayoress are attending. With this list is another sheet containing biographical details for the Lord Mayor and Lady Mayoress. Two pieces, printed.
• Official letter from A.D.H. Bivar, Director, concerning the Ballot for attendance at the Reception, typed with printed letterhead. With this are 2 copies of the ballot form, typed.
• Official letter from A.D.H. Bivar, Director, concerning arrangements for the Reception.
• "Notes for the Guidance of Fellows on the Occasion of the Visit of Her Majesty the Queen and His Royal Highness the Duke of Edinburgh to the Society on February 19th 1973 - typed, 1 piece.

Printed invitation from the President and Council of the Royal Asiatic Society to the Society's 150th Anniversary Reception and Exhibition. Five copies including one with Dr John Hansman as the invited guest, still in its original envelope.

Correspondence concerning the attendance of the Queen at the Royal Asiatic Society's Sesquicentenary celebrations. These are: Letter from Lord Scarbrough to Professor C.F. Beckingham concerning the possibility of the Queen attending an event for the Society's Sesquicentenary, typed, dated 13 December 1968. Letter to Mr B.W. Robinson concerning the wording of an invitation to the Queen for the Sesquicentenary, typed, dated 10 July 1970. On reverse is a handwritten draft of the invitation. Letter from Buckingham Palace to state that it was too early to assess whether the Queen would be able to preside over the Society's Sesquicentenary dinner and for the Society to contact again in 1972, typed with printed letterhead, dated 14 July 1970. Letter from B.W. Robinson, President of Royal Asiatic Society, to Buckingham Palace to request the Queen's presence at a Reception on 15 March 1973, typed, dated 18 February 1972. Letter from Buckingham Palace to Mr B.W. Robinson to state that the Queen's 1973 programme will be decided at the end of the year when the invitation will be brought to her attention, typed with printed letterhead, dated 22 February 1972. Letter from Secretary, Royal Asiatic Society, to Buckingham Palace to acknowledge receipt of letter of 22 February, typed, dated 23 February 1972. Letter to Buckingham Palace to state that the date of the Reception is not fixed and the Society plans to mount a small exhibition of the Society's collections on the occasion, typed, dated 5 December 1972. Letter from Buckingham Palace to Mr Robinson, Royal Asiatic Society, to confirm the date of Monday 19 February for the Reception, typed with printed letterhead, dated 18 December 1972. Letter from Royal Asiatic Society to Buckingham Palace replying to one of 18th December and to state the Society's delight that the Duke of Edinburgh will accompany the Queen, typed, undated. Letter from B.W. Robinson, President of Royal Asiatic Society, to Mr Moore, Sandringham, to ask advise concerning the programme, typed, dated 8 January 1973. Letter from B.W. Robinson, President of Royal Asiatic Society, to Buckingham Palace to ask further advise concerning the Reception, typed, undated. Letter from Sandringham to B.W. Robinson to answer his question regarding the Reception, typed with printed letterhead, dated 10 January 1973. Letter from Secretary, Royal Asiatic Society, to Buckingham Palace to enclose a draft timetable, typed, dated 29 January 1973. Letter from Buckingham Palace to Miss Crawford, Secretary of Royal Asiatic Society, to state that the Queen and Duke of Edinburgh have given their approval to the draft timetable, and asking for a detailed programme to now be sent, typed with printed letterhead, dated 2 February 1973. Letter from Secretary, Royal Asiatic Society, to Buckingham Palace to enclose a detailed programme, typed, dated 6 February 1973. Letter from Secretary, Royal Asiatic Society, to Buckingham Palace to enclose the biographical details that had been requested, typed, dated 9 February 1973. Letter from Buckingham Palace to Miss Crawford, Secretary of Royal Asiatic Society, to confirm the Press arrangements for the Reception, typed with printed letterhead, dated 13 February 1973. Letter from Buckingham Palace to Mr B.W. Robinson President of Royal Asiatic Society, to thank the Society on behalf of the Queen for their enjoyable visit, typed with printed letterhead, dated 20 February 1973. Letter from Secretary, Royal Asiatic Society, to Buckingham Palace to enclose a photograph of the Queen and the Duke of Edinburgh for them to sign, typed, dated 2 May 1973. Letter from Buckingham Palace to Miss Crawford, Secretary of Royal Asiatic Society, to return the signed photograph, typed with printed letterhead, dated 9 May 1973. Letter from Secretary, Royal Asiatic Society, to Buckingham Palace to thank for the photographs, typed, dated 18 May 1973.

Correspondence concerning the Sesquicentenary Reception. This falls into 6 categories:

• Letter from Ralph Tubbs, tenant at 56 Queen Anne Street, to state that he and his staff will have vacated the premises by 5.30pm on date of the reception, 1 item.
• Correspondence with Press, 2 items.
• Correspondence with City Hall concerning the Reception, 3 items.
• Letters of acceptance to the Reception, 49 items.
• Letters of regret concerning the Reception, 17 items.
• Letters of thanks after the Reception, 2 items.

Visitors' Book for the Sesquicentenary Reception containing the signatures of the guests including those of Her Majesty the Queen and HRH The Duke of Edinburgh.

Newspaper cuttings from The Times, 19 February 1973, The Times, 20 February 1973, The Daily Telegraph 20 February 1973, and Mayfair News, 2 March 1973, and unknown paper, all reporting on the Queen's visit to the Royal Asiatic Society's Sesquicentenary Reception.

18 black & white photographs documenting the Sesquicentenary Reception. Many show the Queen and the Duke of Edinburgh being introduced to other guests. Some of these have been mounted on card. Also 20 small photographic negatives.

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