1. Letter from Peter Bentvelzen, Radiobiological Institute of the Organization for Health Research (The Netherlands) to Harold Varmus Publication: Produced: 22 August 1975 Subject(s): Mammary Tumor Virus, Mouse Archival Collection: The Harold Varmus Papers (Profiles in Science)
2. Letter from Harold Varmus to Peter Bentvelzen, Radiobiological Institute of the Organization for Health Research (The Netherlands) Publication: Produced: 9 September 1975 Subject(s): Mammary Tumor Virus, Mouse Archival Collection: The Harold Varmus Papers (Profiles in Science)
3. 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)