Titles
- Letter from Joshua Lederberg to John Wheeler3
- Letter from Joshua Lederberg to John Z. Bowers, Josiah Macy, Jr. Foundation3
- Letter from Joshua Lederberg to Julien E. Mack3
- Letter from Joshua Lederberg to K. Bhaskaran3
- Letter from Joshua Lederberg to Katherine B. Oettinger3
- Letter from Joshua Lederberg to Katherine Wilson3
- Letter from Joshua Lederberg to Kazutami Kiyota3
- Letter from Joshua Lederberg to Kenneth R. Hansen3
- Letter from Joshua Lederberg to Klaus Rothfels3
- Letter from Joshua Lederberg to Leonard Krieger3
- Letter from Joshua Lederberg to Lewis Thomas, Memorial Sloan-Kettering Cancer Center3
- Letter from Joshua Lederberg to Linus Pauling3
- Letter from Joshua Lederberg to Loren Baritz3
- Letter from Joshua Lederberg to Louis Wienckowski3
- Letter from Joshua Lederberg to Manson Benedict3
- Letter from Joshua Lederberg to Marcel Florkin3
- Letter from Joshua Lederberg to Margaret Wightman3
- Letter from Joshua Lederberg to Mario U. Dianzani3
- Letter from Joshua Lederberg to Martin Kristensen3
- Letter from Joshua Lederberg to Marvin L. Minsky3