1. Letter from Kalman Perk, School of Veterinary Medicine, Hebrew University of Jerusalem to Harold Varmus Publication: Produced: 17 June 1984 Subject(s): ClassificationRetroviridae Archival Collection: The Harold Varmus Papers (Profiles in Science)
2. Letter from Harold Varmus to David W. Kingsbury, St. Jude Children's Research Hospital Publication: Produced: 2 April 1982 Subject(s): RetroviridaeClassification Archival Collection: The Harold Varmus Papers (Profiles in Science)
3. Letter from Harold Varmus to Natalie Teich, Imperial Cancer Research Fund Laboratories Publication: Produced: 2 April 1982 Subject(s): RetroviridaeClassification Archival Collection: The Harold Varmus Papers (Profiles in Science)
4. Letter from David W. Kingsbury, St. Jude Children's Research Hospital to Harold Varmus Publication: Produced: 25 January 1984 Subject(s): RetroviridaeClassification Archival Collection: The Harold Varmus Papers (Profiles in Science)
5. Letter from Harold Varmus to David W. Kingsbury, St. Jude Children's Research Hospital Publication: Produced: 2 February 1984 Subject(s): RetroviridaeClassification Archival Collection: The Harold Varmus Papers (Profiles in Science)
6. Letter from Bernard Roizman, Committee on Virology, University of Chicago to Harold Varmus Publication: Produced: 2 May 1985 Subject(s): ClassificationHerpesviridae Archival Collection: The Harold Varmus Papers (Profiles in Science)
7. Letter from Peter K. Vogt, University of Southern California School of Medicine to Harold Varmus Publication: Produced: 11 March 1975 Subject(s): ClassificationTerminology as TopicViruses Archival Collection: The Harold Varmus Papers (Profiles in Science)
8. Letter from Harold Varmus to Peter K. Vogt, University of Southern California School of Medicine Publication: Produced: 19 March 1975 Subject(s): ClassificationTerminology as TopicViruses Archival Collection: The Harold Varmus Papers (Profiles in Science)