1. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 9 August 1974 Genre: Letters (correspondence)
2. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 11 October 1974 Genre: Letters (correspondence)
3. Letter from Francis Crick to Alexander Rich Creator: Crick, Francis, 1916-2004 Date: 4 September 1974 Genre: Letters (correspondence)
4. Letter from Francis Crick to Alexander Rich Creator: Crick, Francis, 1916-2004 Date: 22 October 1974 Genre: Letters (correspondence)
5. Letter from James D. Watson to Francis Crick Creator: Watson, James D., 1928- Date: 17 March 1966 Genre: Letters (correspondence)