21. Letter from Francis Crick to Andrew Poggenpohl, National Geographic Magazine Creator: Crick, Francis, 1916-2004 Date: 19 August 1974 Genre: Letters (correspondence)
22. Letter from Francis Crick to Harold Himsworth, Medical Research Council of Great Britain Creator: Crick, Francis, 1916-2004 Date: 15 June 1953 Genre: Letters (correspondence)
23. Letter from A. V. Hill to Francis Crick Creator: Hill, A. V. Date: 11 March 1949 Genre: Letters (correspondence)
24. Letter from Alexander Goldfarb to Francis Crick Creator: Goldfarb, Alexander Date: 22 August 1975 Genre: Letters (correspondence)
25. 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)
26. Letter from Francis Crick to the Editor of The Sciences Creator: Crick, Francis, 1916-2004 Date: 2 October 1979 Genre: Letters (correspondence)
27. Letter from Margaret Markham to Francis Crick Creator: Markham, Margaret Date: 12 September 1979 Genre: Letters (correspondence)
28. Letter from Charlotte Friend to Francis Crick Creator: Friend, Charlotte Date: 11 September 1979 Genre: Letters (correspondence)
29. Letter from Aaron Klug to Francis Crick Creator: Klug, Aaron Date: 18 September 1979 Genre: Letters (correspondence)
30. The Physical Properties of Cytoplasm: A Study by Means of the Magnetic Particle Method, Part I. Experimental Creator: Hughes, A. F. W.Crick, Francis, 1916-2004 Date: 1950 Publisher: The Academic Press Genre: Articles