21. Letter from Francis Crick to Nathan M. Pusey, Harvard University Creator: Crick, Francis, 1916-2004 Date: 1 December 1966 Genre: Letters (correspondence)
22. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 1 November 1966 Genre: Letters (correspondence)
23. Letter from Francis Crick to Marshall W. Nirenberg Creator: Crick, Francis, 1916-2004 Date: 10 May 1966 Genre: Letters (correspondence)
24. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: 10 October 1966 Genre: Letters (correspondence)
25. Letter from Francis Crick to Thomas J. Wilson, Harvard University Press Creator: Crick, Francis, 1916-2004 Date: 21 October 1966 Genre: Letters (correspondence)
26. Letter from Francis Crick to James D. Watson (and notes concerning Watson's book, "The Double Helix") Creator: Crick, Francis, 1916-2004 Date: 31 March 1966 Genre: Letters (correspondence)Notes
27. Letter from Francis Crick to Rosalind Franklin (and notes on two papers by Franklin and Raymond Gosling) Creator: Crick, Francis, 1916-2004 Date: 5 June 1953 Genre: Letters (correspondence)Notes
28. Letter from Francis Crick to C. H. Waddington Creator: Crick, Francis, 1916-2004 Date: 9 November 1967 Genre: Letters (correspondence)
29. 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)
30. Letter from Francis Crick to John A. B. Gray, Medical Research Council of Great Britain Creator: Crick, Francis, 1916-2004 Date: 5 November 1968 Genre: Letters (correspondence)
31. Letter from Francis Crick to Howard M. Temin Creator: Crick, Francis, 1916-2004 Date: 17 September 1970 Genre: Letters (correspondence)
32. Letter from Francis Crick to Warren Weaver Creator: Crick, Francis, 1916-2004 Date: 16 May 1967 Genre: Letters (correspondence)
33. Letter from Francis Crick to Thomas H. Jukes Creator: Crick, Francis, 1916-2004 Date: 20 May 1974 Genre: Letters (correspondence)
34. Letter from Francis Crick to W. Traub Creator: Crick, Francis, 1916-2004 Date: 2 January 1970 Genre: Letters (correspondence)
35. Letter from Francis Crick to Douglas R. Tobin Creator: Crick, Francis, 1916-2004 Date: 27 November 1970 Genre: Letters (correspondence)
36. Letter from Francis Crick to Howard M. Temin Creator: Crick, Francis, 1916-2004 Date: 3 August 1970 Genre: Letters (correspondence)
37. Letter from Francis Crick to Eric I. Hamilton Creator: Crick, Francis, 1916-2004 Date: 6 September 1973 Genre: Letters (correspondence)
38. Letter from Francis Crick to H. Gobind Khorana Creator: Crick, Francis, 1916-2004 Date: 28 June 1974 Genre: Letters (correspondence)
39. Letter from Francis Crick to Ernst Mayr Creator: Crick, Francis, 1916-2004 Date: 21 April 1971 Genre: Letters (correspondence)
40. Letter from Francis and Odile Crick to Fritz Lipmann Creator: Crick, OdileCrick, Francis, 1916-2004 Date: 25 June 1976 Genre: Letters (correspondence)