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Photocopy of the certificate of appointment of Roy Markham to the VRU, 17 July 1942. Photocopy of the letter to Roy Markham from the ARC offering employment dated 4 Nov 1947. Envelope of photocopies of correspondence between Roy Markham and David Lipkin 1953-1960. Bundle of photocopies of 2 letters between Roy Markham and the BBC and a newspaper clipping (copy), 1958. Photocopies of letters from Roy Markham to David Lipkin not dated, c 1960s. Photocopies of letters from Roy Markham to David Lipkin 1960-1969. Original letter to Roy Markham from David Lipkin, 8 April 1964. Photocopies of letters from Roy Markham to David Lipkin no dates. Misc. photocopies from 1970s: First John Innes Symposium, Athenaeum dinner seat plan, letter of congratulations, flyer for electron micrographs, 1970-1978. Bundle of correspondence between Roy Markham and David Lipkin, 1973-1977. Archivists notes.

Correspondence between Roy Markham, Virus Research Unit (VRU), Cambridge and David Lipkin, Dept. of Chemistry, University of Washington, St Louis, Missouri, USA: To the Sec., ARC, London from the Sec, Dept. of Scientific and Industrial Research, London, re approved OEEC Senior Visiting Fellowship for David Lipkin, purpose and grant details, 8 April 1960. Bundle of letters between RM and the ARC re David Lipkin's visit to the VRU, expenses, times etc, Jun-Aug 1960. Bundle of letters re. Lipkin's visit to VRU in summer 1960 on a Senior Visiting Fellowship, including a report paper on 'work carried out in collaboration with Prof. D Lipkin in the summer of 1960' 4 pp, by RM, c Oct 1960. DL (and Jinny Lipkin) to RM (and Maggie Markham), 22 Dec 1960: family and work news. RM to DL, 29 Dec 1960: Charles Lowe's results on ammonium cyanide, new amino acid analyser, Bob Hazelkorn, work on nucleic acid of TYM. RM to DL, 19 Jun 1961: enquiry about solvent. DL to RM, 19 Feb 1962: work on paper on cyclic sulfite and esters of polymethylene, description of recent experiments preparing phosphoric acid, diagram of structure of compound, news from Waldo [Cohen], description of a new light filter, family news. RM to DL, 5 Mar 1962: work with Mick Johnson on turnip yellow mosaic virus nucleic acid by ethanol, coding. DL to RM, 15 May 1962: comments on various experiments, findings of 'cyclic adenylic acid in RNAse digests', suggestions in looking for Me3PO4 or Et3 PO4, meeting with Leon Heppel, work on iodoguanosine, talk and visit to Gobind in Madison, family news. RM to DL, 5 Oct 1962: accepts invitation to St Louis, arrival at VRU of Waldo [Cohen], work with EF acid. RM to DL, 22 Nov 1962: plan to visit St Louis, degradation of RNA by HF, anhydrous hydrazinolysis experiment, Waldo [Cohen], John Sowden. RM to DL, 3 Dec 1962: visa for visit to UK, HF degradation, Leon H[eppel] on deamination. DL to RM, 19 Dec 1962: plans for visit, hydrazinolysis experiment, Leon [Heppel] and poly-AC RM to DL, 6 Jul 1963: following RMs visit to St Louis, answers DL query on relative merits of cyclicnucleitide compounds and linear ones, mentions work of David Dunn, Jack Hitchborn and Mick Johnson. DL to RM, 27 Jan 1967: family news (Lipkin's son stayed with the Markhams in 1966), work, teaching, and research news, mentions Tom Cori, other general news, for example, Reagan's detrimental effect on the school system (Ronald Reagan was 33rd governor of California from 1967 to 1975), Paper: 'Determination of the Base Composition of RNA' by David Lipkin and J W Abrell, 23 Oct 1962.

Collection of correspondence with Lipkin starting in 1953. Mainly general, family and work news, some research details and hand drawn experiments, news about various colleagues including Waldo Cohn, Leon Heppel, Jack Abrell, David Dunn, Jack Hitchborn, Mick Johnson, Marianne Mandel, Dick Matthews, C P Snow, Arthur Bancroft.

Arranged in alphabetical order

Correspondence between RM and Charles Upton Lowe, State University of New York at Buffalo, USA. Lowe spent 20 months training at the VRU under Roy Markham (1960-61) working on nucleic acid metabolism. Includes detailed reports on his work at the VRU and bibliography. Lowe started work on identifying compounds produced by heating ammonium crystals in aqueous solutions with unexpectedly interesting results, identifying a large number of important biological molecules. RM and his wife later stayed with the Lowe family while visiting the US. Includes letters between RM and Leon A Heppel regarding extending Lowe's grant to stay longer.

Included at B.7 is a draft of Bateson's letter of acceptance of the Directorship.