1. Drawing of the double helix

Date:

[ca. 1953]

2. Letter from Francis Crick to James D. Watson

Date:

10 March 1966

3. Letter from Francis Crick to James D. Watson

Date:

27 September 1966

4. Letter from James D. Watson to Francis Crick

Date:

2 August 1960

5. Letter from Francis Crick to Igor Y. Tamm

Date:

5 December 1962

6. Letter from Igor Y. Tamm to Francis Crick

Date:

9 November 1962

7. Letter from Francis Crick to Andrew Poggenpohl, National Geographic Magazine

Date:

19 August 1974

8. Letter from Francis Crick to Harold Himsworth, Medical Research Council of Great Britain

Date:

15 June 1953

9. The Race for the Double Helix--Providence and Personalities

Date:

11 July 1974

10. The Double Helix Revisited--Francis Crick and James Watson Talk to Paul Vaughan about Their Discovery of the Molecular Structure of DNA

Date:

14 December 1972

11. Letter from Francis Crick to James D. Watson

Date:

13 April 1967

12. Letter from Linus Pauling to Francis Crick

Date:

25 April 1967

13. Letter from James D. Watson to Francis Crick

Date:

24 March 1967

14. Letter from Paul Doty to Francis Crick

Date:

16 March 1967

15. Letter from John T. Edsall to Francis Crick

Date:

14 March 1967

16. Letter from Francis Crick to Lawrence Bragg

Date:

23 February 1967

17. Letter from Francis Crick to Maurice Wilkins

Date:

19 January 1967

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

Date:

9 December 1966

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

Date:

23 December 1966

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

Date:

13 January 1967