1. Letter from Harold Varmus to Salvador E. Luria Publication: Produced: 21 October 1975 Subject(s): Financing, OrganizedAvian Sarcoma VirusesMammary Tumor Virus, Mouse Archival Collection: The Harold Varmus Papers (Profiles in Science)
2. 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)
3. Letter from Mike Fried, Imperial Cancer Research Fund Laboratories to Harold Varmus Publication: Produced: 2 August 1977 Subject(s): Mammary Tumor Virus, MouseAvian Sarcoma Viruses Archival Collection: The Harold Varmus Papers (Profiles in Science)
