1. Letter from Francis Crick to James D. Watson

Date:

13 April 1967

2. Letter from James D. Watson to Francis Crick

Date:

24 March 1967

3. Letter from Paul Doty to Francis Crick

Date:

16 March 1967

4. Letter from John T. Edsall to Francis Crick

Date:

14 March 1967

5. Letter from Francis Crick to Lawrence Bragg

Date:

23 February 1967

6. Letter from Francis Crick to Maurice Wilkins

Date:

19 January 1967

7. Letter from Nathan M. Pusey, Harvard University to Francis Crick

Date:

9 December 1966

8. Letter from Francis Crick to Nathan M. Pusey, Harvard University

Date:

23 December 1966

9. Letter from Nathan M. Pusey, Harvard University to Francis Crick

Date:

13 January 1967

10. Letter from James D. Watson to Maurice Wilkins

Date:

28 November 1966