1. Letter from Harold Varmus to Mike Fried, Imperial Cancer Research Fund Laboratories Creator: Varmus, Harold Date: [8 February 1978] Genre: Letters (correspondence)
2. Letter from Harold Varmus to Mike Fried, Art, Herman and Nancy Quintrell Creator: Varmus, Harold Date: [1978] Genre: Letters (correspondence)
3. Letter from Harold Varmus to Roel Nusse Creator: Varmus, Harold Date: [28 March 1979] Genre: Letters (correspondence)
4. Status of Viral DNA in Cells Chronically Infected by RNA Tumor Viruses Creator: UCSF Date: [1978] Genre: Slides (photographs)