11. Letter from Dorothy Wrinch to Rosalind Franklin Creator: Wrinch, Dorothy Date: 7 May 1955 Genre: Letters (correspondence)
12. Letter from F. C. Bawden to Rosalind Franklin Creator: Rothamsted Experimental StationBawden, F. C. Date: 27 February 1957 Genre: Letters (correspondence)
13. Letter from F. C. Bawden to Rosalind Franklin Creator: Rothamsted Experimental StationBawden, F. C. Date: 20 April 1956 Genre: Letters (correspondence)
14. Letter from F. C. Bawden to Rosalind Franklin Creator: Rothamsted Experimental StationBawden, F. C. Date: 13 March 1957 Genre: Letters (correspondence)
15. Letter from F. C. Bawden to Rosalind Franklin Creator: Rothamsted Experimental StationBawden, F. C. Date: 29 May 1956 Genre: Letters (correspondence)
16. Letter from Aaron Klug to Philip Siekevitz Creator: Klug, AaronThe MRC Laboratory of Molecular Biology Date: 14 April 1976 Genre: Letters (correspondence)
17. Letter from Philip Siekevitz to Aaron Klug Creator: New York Academy of SciencesSiekevitz, Philip Date: 26 March 1976 Genre: Letters (correspondence)
18. Letter from Donald L. D. Caspar to Rosalind Franklin Creator: Caspar, Donald L. D.Cavendish Laboratory (Cambridge, England) Date: [1956] Genre: Letters (correspondence)
19. Letter from John Desmond Bernal to Monsieur Beaudouin Creator: Bernal, John DesmondBirkbeck College Date: 14 December 1956 Genre: Letters (correspondence)
20. Letter from L. H. Gray to Rosalind Franklin Creator: Gray, L. H.British Empire Cancer Campaign Research Unit in Radiobiology Date: 25 February 1957 Genre: Letters (correspondence)