1. Letter from Francis Crick to Ernst Mayr Creator: Crick, Francis, 1916-2004 Date: 21 April 1971 Genre: Letters (correspondence)
2. Letter from Ernst Mayr to Francis Crick Creator: Mayr, Ernst, 1904-2005 Date: 14 April 1971 Genre: Letters (correspondence)
3. Letter from John T. Edsall, Fogarty International Center to Francis Crick Creator: Fogarty International CenterEdsall, John T. Date: 5 March 1971 Genre: Letters (correspondence)
4. Letter from Francis Crick to John T. Edsall, Fogarty International Center Creator: Crick, Francis, 1916-2004 Date: 22 February 1971 Genre: Letters (correspondence)