Includes:
- Correspondence between Renwick and Dr Arthur Veale concerning a proposed seminar on Familial Intestinal Polyposis on 5 October 1963;
- Letter Renwick from Dr Peter M B Walker concerning his joint lecture with Dr Anne McLaren titled DNA duplex reformation in the study of genetic relatedness, due to be given on January 1964;
- Correspondence between Renwick and Dr R L Kirk, Chief of the Human Genetics Unit at the World Health Organisation in Geneva, trying to organise a time when Dr Kirk could deliver a seminar on his next trip to the UK, 17 Oct 1965;
- Correspondence between Renwick and Dr Philip Macdonald Sheppard from Liverpool University concerning Dr Sheppard's lecture in Edinburgh on Gene interaction and the prevention of rhesus haemolytic disease in the newborn and his plan to deliver a similar seminar in Glasgow in spring, Oct 1965;
- Correspondence between Renwick Dr Peter Moss of the Royal Infirmary in Glasgow concerning Dr Moss's proposed seminar on maple syrup urine disease in March 1966, 25 Oct-30 Dec 1965.