- Letter from Harold Varmus to Max Essex, Harvard School of Public Health1
- Letter from Harold Varmus to Maxine Singer1
- Letter from Harold Varmus to Natalie Teich, Imperial Cancer Research Fund Laboratories1
- Letter from Harold Varmus to Peter K. Vogt, University of Southern California School of Medicine1
- Letter from Harold Varmus to Robert C. Gallo, National Institutes of Health1
- Letter from Harold Varmus to fellow clinicians who work with AIDS patients on their suggestions for naming the AIDS virus1
- Letter from Hilary Wass to Harold Varmus1
- Letter from J. Allen McCutchan, University of California, San Diego Medical Center to Harold Varmus1
- Letter from J. Michael Bishop to Peter K. Vogt, University of Southern California School of Medicine1
- Letter from J. Oliver Lampen, American Cyanamid Company to Joshua Lederberg1
- Letter from J. Vivian Wells, Royal North Shore Hospital to Harold Varmus1
- Letter from John M. Coffin and Harold Varmus to their colleagues1
- Letter from Jonathan W. M. Gold, Memorial Sloan-Kettering Cancer Center to Harold Varmus1
- Letter from Joseph L. Melnick, Baylor College of Medicine to Harold Varmus1
- Letter from Joshua Lederberg to Salvador E. Luria1
- Letter from Kumao Toyoshima, Institute of Medical Science (Japan) to Harold Varmus1
- Letter from Linda Rabeneck to Harold Varmus1
- Letter from Marcus A. Conant, University of California, San Francisco to Harold Varmus1
- Letter from Mark H. Kaplan, Jerome E. Groopman, Sheldon H. Landesman, Leon D. Epstein, Steven Marlowe, North Shore University Hospital to Harold Varmus1
- Letter from Martin S. Hirsch, Massachusetts General Hospital to Max Essex, Harvard School of Public Health1