- Letter from Erling Norrby, Department of Virology, Karolinska Institute to Harold Varmus1
- Letter from H. Hunter Handsfield, Harborview Medical Center to Harold Varmus1
- Letter from Harold Varmus to Alan C. Davis, American Cancer Society1
- Letter from Harold Varmus to D. P. Georgiev, Academy of Sciences (U.S.S.R.)1
- 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 Howard M. Temin, McArdle Laboratory for Cancer Research1
- Letter from Harold Varmus to James D. Watson, Cold Spring Harbor Laboratory1
- Letter from Harold Varmus to Joyce Wallace1
- Letter from Harold Varmus to Kalman Perk, School of Veterinary Medicine, Hebrew University of Jerusalem1
- Letter from Harold Varmus to Kumao Toyoshima, Institute of Medical Science (Japan)1
- Letter from Harold Varmus to Max Essex, Harvard School of Public Health1
- Letter from Harold Varmus to Robert C. Gallo, National Institutes of Health1
- 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 John M. Coffin and Harold Varmus to their colleagues1
- Letter from John M. Coffin, Tufts University School of Medicine to Harold Varmus1
- Letter from Jonathan W. M. Gold, Memorial Sloan-Kettering Cancer Center to Harold Varmus1
- Letter from Kalman Perk, School of Veterinary Medicine, Hebrew University of Jerusalem to Harold Varmus1