41. Letter from L. H. Gray to Rosalind Franklin Publication: Produced: 25 February 1957 Subject(s): Tobacco Mosaic VirusCrystallography, X-Ray Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
42. Letter from L. H. Gray to Rosalind Franklin Publication: Produced: 20 March 1957 Subject(s): Tobacco Mosaic VirusCrystallography, X-Ray Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
43. Letter from H. Fraenkel-Conrat to Rosalind Franklin Publication: Produced: 10 May 1955 Subject(s): Tobacco Mosaic Virus Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
44. Letter from H. Fraenkel-Conrat to Rosalind Franklin Publication: Produced: 20 October 1955 Subject(s): Tobacco Mosaic Virus Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
45. Letter from H. Fraenkel-Conrat to Rosalind Franklin Publication: Produced: 14 March 1956 Subject(s): Tobacco Mosaic VirusX-Ray Diffraction Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
46. Letter from C. A. Knight to Rosalind Franklin Publication: Produced: 3 December 1954 Subject(s): Tobacco Mosaic VirusX-Ray Diffraction Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
47. Letter from C. A. Knight to Rosalind Franklin Publication: Produced: 11 January 1955 Subject(s): Tobacco Mosaic VirusRNA Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
48. Letter from Robley Williams to Rosalind Franklin Publication: Produced: 6 January 1955 Subject(s): Tobacco Mosaic VirusX-Ray Diffraction Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
49. Letter from Robley Williams to Rosalind Franklin Publication: Produced: 2 August 1955 Subject(s): Tobacco Mosaic VirusRNAX-Ray Diffraction Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
50. Letter from Robley Williams to Rosalind Franklin Publication: Produced: 10 October 1955 Subject(s): Tobacco Mosaic VirusRNA Archival Collection: The Rosalind Franklin Papers (Profiles in Science)