Correspondence on tobacco virus with photographs. Paper: 'Tobacco Virus Diseases, Report of the Plant Pathologist as at the end of November 1964'.
Itinerary and correspondence regarding RM's trip to Japan 20 Oct-25 Nov 1963), visiting scientists and giving lectures at universities including Tokyo, Kyoto, Kyushu and Fukuoka and reciprical visits by Japanese scientists.
Correspondence, schedules, proposals, papers etc. regarding the exhibit 'Cell wall growth on plant protoplasts' shown by RM at the Royal Society Conversazione/Soirée (22 June 1978). Includes explanatory notes by Jeremy Burgess and Paul J Linstead.
Correspondence, forms etc. regarding Roy Markham's propsal for John Basil Bancroft to be elected a member of the Royal Society.
Correspondence with the National Fruit and Cider Unit, Research Station, Long Ashton, Bristol: re open days, meetings, tastings.etc. Markham was appointed as a JII representative on the Governing Body in 1968.
Correspondence regarding requests for virus and seed specimens from British and international colleagues, universities and science organisations.
Correspondence regarding research grants including successful grants awarded to the JII
Requests for permissions to use JII/RM photographs for books, articles etc. Includes a letter from William J C Lawrence regarding using photographs for his memoirs (May 1968).
Hardback ring file (removed) of notes, title page 'Purification of Virus Suspensions'.
Notebook (no cover) on 'Radio P and Aphid feeding', Feb-March 1947.