11. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 27 September 1966 Genre: Letters (correspondence)
12. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 5 March 1958 Genre: Letters (correspondence)
13. Letter from Andre Lwoff, Institut Pasteur (France) to Francis Crick Creator: Institut Pasteur (Paris, France)Lwoff, Andre, 1902- Date: 13 September 1957 Genre: Letters (correspondence)
14. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 2 August 1960 Genre: Letters (correspondence)
15. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 27 May 1960 Genre: Letters (correspondence)
16. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 14 November 1957 Genre: Letters (correspondence)
17. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 12 April 1958 Genre: Letters (correspondence)
18. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 23 September 1956 Genre: Letters (correspondence)
19. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 8 March 1957 Genre: Letters (correspondence)
20. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 27 May 1955 Genre: Letters (correspondence)