1. 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)
2. 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)
3. Letter from Harold Varmus to Roel Nusse Publication: Produced: [28 March 1979] Subject(s): Mammary Tumor Virus, MouseDNA, ViralRNA, Viral Archival Collection: The Harold Varmus Papers (Profiles in Science)
