Scientific Correspondence between David J. Thouless, and Dr. David Penn and Yuval Gefen, 1983-1985 Contains the following correspondence: Correspondence sent to Dr. David Penn of the Condensed Matter Theory Programme, concerning research and grants - dated 8 July 1983. Correspondence to and from Yuval Gefen concerning the availability of a postdoctoral position at the University of Cambridge - dated 12 November to 11 March 1985. July 1983-March 1985