- Letter from Harold Varmus to J. Michael Bishop1
- Letter from Harold Varmus to Jon Beckwith, Department of Microbiology and Molecular Genetics, Harvard Medical School1
- Letter from Harold Varmus to Joyce Wallace1
- 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. Vivian Wells, Royal North Shore Hospital to Harold Varmus1
- Letter from Jay A. Levy, University of California, San Francisco School of Medicine to Harold Varmus3
- Letter from Jon Beckwith, Department of Microbiology and Molecular Genetics, Harvard Medical School to Harold Varmus1
- Letter from Jonathan W. M. Gold, Memorial Sloan-Kettering Cancer Center to Harold Varmus1
- Letter from Linda Rabeneck to Harold Varmus1
- Letter from Linus Pauling to Elizabeth and Arthur M. Sackler1
- Letter from Michael S. Gottlieb, University of California, Los Angeles School of Medicine to Harold Varmus1
- Letter from Paul Volberding, San Francisco General Hospital Medical Center to Harold Varmus1
- Letter from Peter R. Wolfe, University of California, Los Angeles AIDS Center to Harold Varmus1
- Letter from Renato Dulbecco, Salk Institute to Harold Varmus1
- Letter from Robert K. Bolan to Harold Varmus1
- Letter from Sigmund Friedman to C. Everett Koop1
- Letter from Thomas C. Merigan, Stanford University School of Medicine to Harold Varmus1
- Letter from W. Abe Andes, Tulane University Medical Center to Harold Varmus1