Titles
- Letter from Alan Cranston to Joshua Lederberg3
- Letter from Alan Gregg to Raymond Fosdick3
- Letter from Alan Gregg to Roger S. Greene3
- Letter from Albert B. Sabin, The Children's Hospital (Cincinnati, Ohio) to Joshua Lederberg3
- Letter from Albert P. Krueger to Joshua Lederberg3
- Letter from Alexander Rich to Rosalind Franklin3
- Letter from Alexander Tomasz and Peter Lengyel to Joshua Lederberg3
- Letter from Alexander Wiley to Joshua Lederberg3
- Letter from Alfred E. Mirsky to Joshua Lederberg3
- Letter from Allan Scott to Joshua Lederberg3
- Letter from Allan Wittman, John Wiley & Sons to Joshua Lederberg3
- Letter from Alvin M. Weinberg to Joshua Lederberg3
- Letter from Art Galston to Joshua Lederberg3
- Letter from Arthur B. Pardee to Joshua Lederberg3
- Letter from Arthur Brown to Joshua Lederberg3
- Letter from Arthur C. Giese to Joshua Lederberg3
- Letter from Arthur G. Steinberg to Joshua Lederberg3
- Letter from Arthur Kornberg to H. Gobind Khorana3
- Letter from Arthur Kornberg to Robert L. Sinsheimer3
- Letter from Barbara Atwood to Joshua Lederberg3