1. Letter from Francis Crick to Douglas R. Tobin Creator: Crick, Francis, 1916-2004 Date: 27 November 1970 Genre: Letters (correspondence)
2. Letter from Francis Crick to Jerry Donohue Creator: Crick, Francis, 1916-2004 Date: 20 May 1970 Genre: Letters (correspondence)
3. Letter from Francis Crick to Jerry Donohue Creator: Crick, Francis, 1916-2004 Date: 3 August 1970 Genre: Letters (correspondence)
4. Letter from Francis Crick to Jerry Donohue Creator: Crick, Francis, 1916-2004 Date: [ca. 15 July 1970] Genre: Letters (correspondence)
5. Letter from Francis Crick to John Desmond Bernal Creator: Crick, Francis, 1916-2004 Date: 20 January 1969 Genre: Letters (correspondence)