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: University of KentuckyEdwards, Philip R. Date: 15 November 1946 Genre: Letters (correspondence)
3. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R.University of Kentucky. College of Agriculture and Home Economics. Department of Animal Pathology Date: 4 September 1947 Genre: Letters (correspondence)
4. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R. Date: 1 November 1947 Genre: Letters (correspondence)
5. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R. Date: 30 November 1949 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: 28 February 1952 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: 19 February 1952 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: 27 March 1952 Genre: Letters (correspondence)
9. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R. Date: 23 March 1953 Genre: Letters (correspondence)
10. Letter from P. R. Edwards to Joshua Lederberg Creator: Edwards, Philip R. Date: 15 April 1953 Genre: Letters (correspondence)