Correspondence regarding the Elisha Mitchell Memorial Lecture, delivered at the University of North Carolina on 5 March, 1964 (with the title "Molecular Genetics"), and other local engagements.
In correspondence, Crick wrote (21 February, 1964): "The Lecture will deal with the chemical nature of the genetic material, how it is copied and the way it influences the cell by controlling the production of specific protein molecules. It will explain how the genetic information is written on a polymer - a very long, thin molecule - in a four-letter chemical code. The cell 'translates' this into the twenty-letter code used to manufacture protein molecules. Because of the enormous magnification produced by this process, a mistake of a single atom in the genetic material may, in special cases, cause the death of the organism."
The file also contains a single sheet (typescript) listing Crick's American engagements for 1964 and payments received (in dollars).