Titles
- Letter from Joshua Lederberg to Frederick H. Kasten1
- Letter from Joshua Lederberg to Furio Colombo1
- Letter from Joshua Lederberg to G. R. Hoffman1
- Letter from Joshua Lederberg to Geoffrey H. Beale1
- Letter from Joshua Lederberg to Howell Raines, New York Times1
- Letter from Joshua Lederberg to Jim Cooper1
- Letter from Joshua Lederberg to John Preer1
- Letter from Joshua Lederberg to McGeorge Bundy1
- Letter from Joshua Lederberg to Rene F. Matagne1
- Letter from Joshua Lederberg to Stephen Cederbaum1
- Letter from Joshua Lederberg to Stephen S. Morse1
- Letter from Joshua Lederberg to Steven Stigler1
- Letter from Joshua Lederberg to Yuri Ghendon, World Health Organization1
- Letter from Lev A. Fedorov to Svetlana Kostic-Stone, New York Academy of Sciences1
- Letter from Lev S. Sandakhchiev to Joshua Lederberg1
- Letter from Lloyd S. Etheredge to Rodney W. Nichols1
- Letter from Louis Sokoloff to Kentaro Mori1
- Letter from Mary Lasker to Maxine Singer1
- Letter from Maxine Singer to Mary Lasker1
- Letter from McGeorge Bundy to Joshua Lederberg1