Titles
- Letter from Haruhiro Higashida to Marshall W. Nirenberg1
- Letter from Henry Margenau to Christian B. Anfinsen1
- Letter from Howard I. Adler to Joshua Lederberg1
- Letter from Ira Michael Heyman to Joshua Lederberg1
- Letter from John A. Moore to Joshua Lederberg1
- Letter from John Holland to Joshua Lederberg1
- Letter from Keith R. Yamamoto to Paul Warenski (c/o U. S. Representative Wayne Owens)1
- Letter from Kenyichi Yano to Joshua Lederberg1
- Letter from Leon A. Heppel to Maxine Singer1
- Letter from Leonard R. Solon to Joshua Lederberg1
- Letter from Marcia Kerstein Zerivitz to Marshall W. Nirenberg1
- Letter from Margaret E. Mahoney, The Commonwealth Fund to Joshua Lederberg1
- Letter from Maxine Singer, Carnegie Institution of Washington to Joshua Lederberg1
- Letter from Neal B. Groman to Joshua Lederberg1
- Letter from P. Dennis Smith to Joshua Lederberg1
- Letter from P. E. Culbertson to Joshua Lederberg1
- Letter from Peter R. Day to Joshua Lederberg1
- Letter from Renato Dulbecco to Victor A. McKusick1
- Letter from Robert A. Levine to Joshua Lederberg1
- Letter from Robert Dorfman to Joshua Lederberg1