61. Letter from Aaron Klug to Francis Crick Creator: Klug, Aaron Date: 31 October 1977 Genre: Letters (correspondence)
62. Letter from Aaron Klug to Francis Crick Creator: Klug, Aaron Date: 12 May 1976 Genre: Letters (correspondence)
63. Letter from Charlotte Friend to the Editor of The Sciences Creator: Friend, Charlotte Date: December 1979 Publisher: New York Academy of Sciences Genre: Letters (correspondence)
64. Letter from Arthur Kornberg to Francis Crick Creator: Kornberg, Arthur, 1918-2007 Date: 3 July 1969 Genre: Letters (correspondence)
65. Letter from Francis Crick to Jacques Monod Creator: Crick, Francis, 1916-2004 Date: 31 December 1961 Genre: Letters (correspondence)