Correspondence concerned with conservation of the Society's collections within this time period:
- Correspondence and instructions re cleaning marble using Sepiolite, 2 pieces, typed, dated 22 March 1968.
- Correspondence with British Museum regarding creating stands for sculptures, 8 pieces, handwritten and typed, dated 1 April 1969 - 13 October 1969.
- Correspondence with E. Panetta, V & A Museum concerning the restoration of a teak stool, 5 pieces, typed, dated 12 March 1969 - 15 April 1969.
- Correspondence with the India Office Library concerning the laminating of a manuscript, 1 piece, typed, dated 20 December 1973.
- Letter from Valery (Gibson), Secretary, Royal Asiatic Society, to Dennis (Duncanson), President. to give a report on Mr Cox's opinion of the condition of the portrait of William Havell (RAS Cat.01.011) and of a further watercolour, unnamed, and whether to undertake their conservation. Handwritten, dated 26 January 1982.
- Correspondence with the Armouries, Tower of London concerning the restoration of a mail shirt, 12 pieces, handwritten and typed, dated 24 September 1975 - 22 August 1983.
- Correspondence concerning the conservation of James Wales' painting of Madhu Rao Narayan, the Maratha Peshwa (RAS Head Cat. 01.014), 5 pieces, handwritten and typed, dated 25 August 1982 - 14 December 1982.
- Correspondence concerning insurance for the portraits of Jamsetjee Boman Jee and Nowrojee Jamset jee and the painting of the Judicial enquiry at Canton while they were undergoing conservation, typed, 2 pieces, dated 17 January 1983 - 7 February 1983.
- Letter from A.D.H. Bivar to Dennis Duncanson concerning the storage of collections in a basement room, 1 piece, typed, dated 16 June 1983.
- Copy of a letter from Godfrey Goodwin to 'Neale; to express his appreciation for the quality of the conservation of two watercolour paintings, 1 piece, handwritten, dated 10 July 1989.