1. Letter from Francis Crick to Nikolai V. Podgorny, Chairman of the Presidium of the Supreme Soviet of the U.S.S.R. Creator: Crick, Francis, 1916-2004 Date: 2 December 1974 Genre: Letters (correspondence)
2. Letter from Francis Crick to Francois Gros Creator: Crick, Francis, 1916-2004 Date: 19 March 1969 Genre: Letters (correspondence)
3. Letter from Francis Crick to Luigi Silvestri Creator: Crick, Francis, 1916-2004 Date: 24 November 1971 Genre: Letters (correspondence)