1. Letter from C. H. Waddington to Francis Crick Creator: Waggington, C. H. (Conrad Hal), 1905-1975 Date: 27 December 1967 Genre: Letters (correspondence)
2. Letter from Francis Crick to C. H. Waddington Creator: Crick, Francis, 1916-2004 Date: 9 November 1967 Genre: Letters (correspondence)
3. Letter from Lord Noel Annan to Francis Crick Creator: Annan, Noel , Lord Date: 4 November 1968 Genre: Letters (correspondence)
4. Letter from Arthur Kornberg to Francis Crick Creator: Kornberg, Arthur, 1918-2007 Date: 24 March 1967 Genre: Letters (correspondence)