- Correspondence between Renwick and Dr Robert G Feldman concerning Renwick's contributions to Feldman's article on MNS linkage with Familial Alazeheimer's disease and photocopy of typescript draft of Blood Group Studies in Familial Alzheimer's Disease Linkage by Renwick and R G Feldman, with manuscript corrections, 1966;
- Letter to Dr Sarah E Bundey from Renwick concerning Dr Feldman's work on linkeage with MNS groups and lod scores;
- Family pedigrees and associated data;
- Computer print-outs and symbolic coding forms;
- Reviews and cuttings concerning publications on studies into Alzeheimer's diesease.