Titles
- Letter from Roy D. Schmickel to Daniel Nathans2
- Letter from Thomas C. Schelling to Joshua Lederberg2
- Letter from W. Todd Wipke to Joshua Lederberg2
- Letter from Walter F. Bodmer to Victor A. McKusick2
- A Geneticist on Safeguards [Letter to the Editor of the New York Times]1
- Kaibab Deer Myth [Letter to the Editor of BioScience]1
- Letter from Alexander Goldfarb to Francis Crick1
- Letter from Alexander Rich to Francis Crick1
- Letter from Arthur H. Mensch to Joshua Lederberg1
- Letter from Barbara J. Bachmann to Edward L. Tatum1
- Letter from C. C. Lindegren to David Perkins1
- Letter from Carl F. Robinow to Joshua Lederberg1
- Letter from Carl M. Shy to Joshua Lederberg1
- Letter from Carl Sagan to Noel Hinners, National Aeronautics and Space Administration (NASA)1
- Letter from Clarence Dennis to E. James Ellis1
- Letter from Clarence Dennis to Robert L. Ringler1
- Letter from Clarence G. Golueke to Joshua Lederberg1
- Letter from Daniel A. Okun to Joshua Lederberg1
- Letter from Daniel Nathans to Aaron J. Shatkin1
- Letter from Daniel Nathans to Roy D. Schmickel1