Titles
- Lectures on the principles and methods of medical observation and research: for the use of advanced students and junior practitioners1
- Legislative Developments : 89th Congress - Second Session1
- Lengthening human life: victories of modern medical science1
- Letter from Alfred E. Mirsky to Edward L. Tatum1
- Letter from David M. Bonner to Joshua Lederberg1
- Letter from Edwin S. Lennox to Joshua Lederberg1
- Letter from J. Oliver Lampen, American Cyanamid Company to Joshua Lederberg1
- Letter from J. W. Lightbown, National Institute for Medical Research (U.K.) to Joshua Lederberg1
- Letter from Joshua Lederberg to Alain Bussard1
- Letter from Joshua Lederberg to Andre Lwoff1
- Letter from Joshua Lederberg to Anna Dean Dulaney1
- Letter from Joshua Lederberg to David M. Bonner1
- Letter from Joshua Lederberg to E. S. Lindstrom1
- Letter from Joshua Lederberg to Frank H. Dickey1
- Letter from Joshua Lederberg to H. J. Muller1
- Letter from Joshua Lederberg to Hans Lettre1
- Letter from Joshua Lederberg to I. D. Michelson1
- Letter from Joshua Lederberg to Jacques Monod1
- Letter from Joshua Lederberg to Kenneth Mather1
- Letter from Joshua Lederberg to Maclyn McCarty1