51. Letter from Rosalind Franklin to H. Fraenkel-Conrat Publication: Produced: 1 November 1955 Subject(s): Tobacco Mosaic VirusX-Ray Diffraction Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
52. Letter from Rosalind Franklin to H. Fraenkel-Conrat Publication: Produced: 7 January 1956 Subject(s): Tobacco Mosaic VirusX-Ray Diffraction Archival Collection: The Rosalind Franklin Papers (Profiles in Science)