1. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 15 January 1951 Genre: Letters (correspondence)
2. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 28 February 1952 Genre: Letters (correspondence)
3. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 19 February 1952 Genre: Letters (correspondence)
4. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 27 March 1952 Genre: Letters (correspondence)
5. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 24 September 1951 Genre: Letters (correspondence)
6. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 14 March 1951 Genre: Letters (correspondence)
7. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 8 November 1951 Genre: Letters (correspondence)
8. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 14 November 1951 Genre: Letters (correspondence)
9. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 4 October 1951 Genre: Letters (correspondence)
10. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.United States. Public Health Service. Federal Security Agency Date: 25 October 1951 Genre: Letters (correspondence)