1. Letter from Harold Varmus to Mike Fried, Imperial Cancer Research Fund Laboratories Publication: Produced: 11 July 1977 Subject(s): Mammary Tumor Virus, MouseAvian Sarcoma VirusesRNA, ViralClone Cells Archival Collection: The Harold Varmus Papers (Profiles in Science)
2. Letter from Michael G. P. Stoker, Imperial Cancer Research Fund Laboratories to Harold Varmus Publication: Produced: 18 October 1977 Subject(s): Hepatitis B virusRNA, ViralAvian Sarcoma Viruses Archival Collection: The Harold Varmus Papers (Profiles in Science)
3. Letter from Harold Varmus to Mike Fried, Imperial Cancer Research Fund Laboratories Publication: Produced: [8 February 1978] Subject(s): DNA, ViralAvian Sarcoma VirusesCloning, MolecularRNA, Viral Archival Collection: The Harold Varmus Papers (Profiles in Science)
4. Letter from Harold Varmus to Mike Fried, Art, Herman and Nancy Quintrell Publication: Produced: [1978] Subject(s): Avian Sarcoma VirusesDNA, ViralRNA, Viral Archival Collection: The Harold Varmus Papers (Profiles in Science)
5. Letter from Harold Varmus to Inder M. Verma, Imperial Cancer Research Fund Laboratories Publication: Produced: [1979] Subject(s): Avian Sarcoma VirusesRNA, Viral Archival Collection: The Harold Varmus Papers (Profiles in Science)
