Titles
- Letter from Frits and Ida Orskov to Joshua and Esther Lederberg8
- Letter from Giovanni Magni to Joshua Lederberg8
- Letter from Guido Pontecorvo to Joshua Lederberg8
- Letter from Harriet Zuckerman to Joshua Lederberg8
- Letter from Henry S. Kaplan to Joshua Lederberg8
- Letter from Herman N. Eisen to Joshua Lederberg8
- Letter from John E. Pfeiffer to Joshua Lederberg8
- Letter from Joshua Lederberg to Ann Landers8
- Letter from Joshua Lederberg to Clifford Grobstein8
- Letter from Joshua Lederberg to E. S. Anderson8
- Letter from Joshua Lederberg to Frits Orskov8
- Letter from Joshua Lederberg to Henry S. Kaplan8
- Letter from Joshua Lederberg to Howard B. Newcombe8
- Letter from Joshua Lederberg to Kenneth S. Warren8
- Letter from Joshua Lederberg to Leo Szilard8
- Letter from Joshua Lederberg to Melvin Cohn8
- Letter from Joshua Lederberg to Peter H. A. Sneath8
- Letter from Joshua Lederberg to Phyllis J. Fried8
- Letter from Joshua Lederberg to Richard S. Young8
- Letter from Joshua Lederberg to Seymour Benzer8