Professor Roger Guillemin, The Salk Institute, Laboratories for Neuroendocrinology, San Diego Correspondence, regarding the sending of samples for scientific experiments; talking about their respective research and work, reading each other's respective manuscripts; exchanging scientific results and mentioning the various meetings and conferences Kosterlitz attended. Includes brief correspondence with Dr Nicholas Chi - Kwan Ling, The Salk Institute, dated November 1976. Letter, dated 22 February 1977, from Guillemin to Dr Konrad F. Springer, Germany, saying he does not think that there should be a monograph or journal on the endorphins at that time, as work on endorphins is just beginning. Letter, dated 17 October 1977, from Kosterlitz, congratulates Guillemin on his receiving of the Nobel Prize for Medicine. Correspondence between 1977 and 1978 relate to Kosterlitz's and Hanna's visit to the US, for the occasion of the 'symposium organized by the Canadian Society for Clinical Investigation' held in Vancouver, 23 - 25 January 1978. Relates to their visit to Guilemin at The Salk Institute. File includes a copy of Ling's Curriculum Vitae ('dated material - October, 1978'). Letter, dated 6 November 1978, from Walter Eckhard, Chairman of the Faculty, explaining that Ling is being considered for promotion to the rank of Associate Research Professor at The Salk Institute and asking Kosterlitz to provide his opinion on Ling. N.B. ?remains closed under data protection legislation. Letter, dated 18 May 1979, from Kosterlitz, says that Les Iversen and Kosterlitz would like to nominate Guillemin for Foreign Membership of the Royal Society of London. Includes a small card, which says: 'The Laboratories for Neuroendocrinology founded by Roger Guillemin at The Salk Institute in 1970 will cease to exist there on March 1, 1989. On March 1 Dr. Guillemin and his laboratory staff will move to The Whittier Institute for Diabetes and Endocrinology. Dr. Nicholas Ling will head the Department of Molecular Endocrinology; Dr. Andrew Baird the Department of Molecular and Cellular Growth Biology. Dr. Guillemin will occupy the Chair of Distinguished Scientist'. The card provides their new mailing address and other details. Original file annotated, 'also Dr. Ling'. There are a number of gaps in the correspondence: between July - October 1976; November 1976 and February 1977; February - November 1978; November 1978 and February 1979, and March 1979 and May 1981. 1976 - 1981