1. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 17 March 1966 Genre: Letters (correspondence)
2. Letter from Edward L. Tatum to Francis Crick Creator: Tatum, Edward L. (Edward Lawrie), 1909-1975 Date: 21 April 1966 Genre: Letters (correspondence)
3. Letter from Sewell Champe to Francis Crick Creator: Champe, Sewell Date: 9 October 1966 Genre: Letters (correspondence)
4. Letter from Francis Crick to Sewell Champe Creator: Crick, Francis, 1916-2004 Date: 24 October 1966 Genre: Letters (correspondence)
5. Letter from Francis Crick to Sewell Champe Creator: Crick, Francis, 1916-2004 Date: 2 November 1966 Genre: Letters (correspondence)
6. Letter from H. Gobind Khorana to Francis Crick Creator: Khorana, Har Gobind, 1922-2011 Date: 3 January 1967 Genre: Letters (correspondence)
7. Letter from Severo Ochoa to Francis Crick Creator: Ochoa, Severo, 1905-1993 Date: 13 February 1967 Genre: Letters (correspondence)
8. Letter from Francis Crick to Severo Ochoa Creator: Crick, Francis, 1916-2004 Date: 21 February 1967 Genre: Letters (correspondence)
9. Letter from Sewell Champe to Francis Crick Creator: Champe, Sewell Date: 1 March 1967 Genre: Letters (correspondence)
10. Letter from Francis Crick to Sewell Champe Creator: Crick, Francis, 1916-2004 Date: 6 March 1967 Genre: Letters (correspondence)