11. 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)
12. Letter from Harold Varmus to J. Michael Bishop Publication: Produced: [August 1978] Subject(s): Avian Sarcoma Viruses Archival Collection: The Harold Varmus Papers (Profiles in Science)
13. 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)
14. 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)
15. Letter from Harold Varmus to Howard Young, National Cancer Institute Publication: Produced: 28 August 1979 Subject(s): DNA, ViralAvian Sarcoma Viruses Archival Collection: The Harold Varmus Papers (Profiles in Science)
16. Letter from Harold Varmus to Michael G. P. Stoker, Imperial Cancer Research Fund Laboratories Publication: Produced: 4 November 1977 Subject(s): Avian Sarcoma Viruses Archival Collection: The Harold Varmus Papers (Profiles in Science)