11. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 2 May 1958 Genre: Letters (correspondence)
12. Letter from Francis Crick to Thomas H. Jukes Creator: Crick, Francis, 1916-2004 Date: 20 May 1974 Genre: Letters (correspondence)
13. Letter from H. Gobind Khorana to Francis Crick Creator: Khorana, Har Gobind, 1922-2011 Date: 22 May 1974 Genre: Letters (correspondence)Diagrams
14. Letter from Thomas H. Jukes to Francis Crick Creator: Jukes, Thomas H. (Thomas Hughes), 1906-1999 Date: 16 May 1974 Genre: Letters (correspondence)
15. Letter from Eric I. Hamilton to Francis Crick Creator: Hamilton, Eric I. Date: 20 August 1973 Genre: Letters (correspondence)
16. Letter from Francis Crick to H. Gobind Khorana Creator: Crick, Francis, 1916-2004 Date: 28 June 1974 Genre: Letters (correspondence)
17. Letter from Thomas H. Jukes to Francis Crick Creator: Jukes, Thomas H. (Thomas Hughes), 1906-1999 Date: 20 December 1979 Genre: Letters (correspondence)
18. Letter from Sydney Brenner to Francis Crick Creator: Brenner, Sydney Date: 27 July 1961 Genre: Letters (correspondence)
19. Letter from Sydney Brenner to Francis Crick Creator: Brenner, Sydney Date: 24 March 1959 Genre: Letters (correspondence)
20. Letter from Francis Crick to Sewell Champe Creator: Crick, Francis, 1916-2004 Date: 24 October 1966 Genre: Letters (correspondence)