51. Letter from Francis Crick to James J. Lingane, Harvard University Chemistry Department Creator: Crick, Francis, 1916-2004 Date: 1 April 1958 Genre: Letters (correspondence)
52. Letter from Francis Crick to John Desmond Bernal Creator: Crick, Francis, 1916-2004 Date: 20 January 1969 Genre: Letters (correspondence)
53. Letter from Francis Crick to Sewell Champe Creator: Crick, Francis, 1916-2004 Date: 24 October 1966 Genre: Letters (correspondence)
54. Letter from Francis Crick to Henry R. V. Arnstein Creator: Crick, Francis, 1916-2004 Date: 14 November 1969 Genre: Letters (correspondence)
55. Letter from Francis Crick to Sewell Champe Creator: Crick, Francis, 1916-2004 Date: 6 March 1967 Genre: Letters (correspondence)
56. Letter from Francis Crick to Sewell Champe Creator: Crick, Francis, 1916-2004 Date: 2 November 1966 Genre: Letters (correspondence)
57. Letter from Francis Crick to Paul Doty Creator: Crick, Francis, 1916-2004 Date: 17 April 1967 Genre: Letters (correspondence)
58. Letter from Francis Crick to Bernard D. Davis Creator: Crick, Francis, 1916-2004 Date: 22 April 1970 Genre: Letters (correspondence)
59. Letter from Francis Crick to Alexander Rich Creator: Crick, Francis, 1916-2004 Date: 4 September 1974 Genre: Letters (correspondence)
60. Letter from Francis Crick to Aaron Klug Creator: Crick, Francis, 1916-2004 Date: 4 April 1959 Genre: Letters (correspondence)