- Letter from David B. McEwan, Honolulu Medical Group, Inc. to Harold Varmus1
- Letter from David Baltimore, Whitehead Institute to Harold Varmus1
- Letter from David McConnell to Daniel Nathans1
- Letter from David W. Kingsbury, Sir William Dunn School of Pathology, University of Oxford to Harold Varmus1
- Letter from Donald I. Abrams, San Francisco General Hospital Medical Center to Harold Varmus1
- Letter from Douglas Hofstadter to Paul Berg and Maxine Singer1
- Letter from Edward Scolnick, National Institutes of Health to Peter K. Vogt, University of Southern California School of Medicine1
- Letter from Eloise R. Giblett to Victor A. McKusick1
- Letter from Erling Norrby, Department of Virology, Karolinska Institute to Harold Varmus1
- Letter from G. Steven Martin, University of California, Berkeley to Peter K. Vogt, University of Southern California School of Medicine1
- Letter from George F. Vande Woude, National Institutes of Health to Harold Varmus1
- Letter from H. Hunter Handsfield, Harborview Medical Center to Harold Varmus1
- Letter from Harold Varmus to Dani P. Bolognesi, Duke University Medical Center1
- Letter from Harold Varmus to David W. Kingsbury, Sir William Dunn School of Pathology, University of Oxford1
- Letter from Harold Varmus to Erling Norrby, Department of Virology, Karolinska Institute1
- Letter from Harold Varmus to George F. Vande Woude, National Institutes of Health1
- Letter from Harold Varmus to Howard M. Temin, McArdle Laboratory for Cancer Research1
- Letter from Harold Varmus to J. Michael Bishop1
- Letter from Harold Varmus to Joyce Wallace1
- Letter from Harold Varmus to Kumao Toyoshima, Institute of Medical Science (Japan)1