1. Letter from Paul Kaesberg to Rosalind Franklin Publication: Produced: 8 September 1955 Subject(s): Tobacco Mosaic VirusMicroscopy, Electron Archival Collection: The Rosalind Franklin Papers (Profiles in Science)
2. Letter from Robley Williams to Rosalind Franklin Publication: Produced: 28 November 1955 Subject(s): Tobacco Mosaic VirusMicroscopy, Electron Archival Collection: The Rosalind Franklin Papers (Profiles in Science)