1. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 13 April 1967 Genre: Letters (correspondence)
2. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 10 October 1966 Genre: Letters (correspondence)
3. Letter from Francis Crick to James D. Watson (and notes concerning Watson's book, "The Double Helix") Creator: Crick, Francis, 1916-2004 Date: 31 March 1966 Genre: Letters (correspondence)Notes
4. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 17 March 1966 Genre: Letters (correspondence)