1. Letter from Ernst H. Beutner to Joshua Lederberg Creator: Beutner, Ernst H., 1923- Date: 7 October 1950 Genre: Letters (correspondence)
2. Letter from Joshua Lederberg to David M. Bonner Creator: Lederberg, Joshua Date: 1950 Genre: Letters (correspondence)
3. Letter from Joshua Lederberg to Edward L. Tatum Creator: Lederberg, Joshua Date: 19 September 1945 Genre: Letters (correspondence)
4. Letter from Joshua Lederberg to Michael Doudoroff Creator: Lederberg, Joshua Date: 16 July 1948 Genre: Letters (correspondence)
5. Letter from Joshua Lederberg to Pierre Fredericq Creator: Lederberg, Joshua Date: 21 November 1950 Genre: Letters (correspondence)
6. Letter from Joshua Lederberg to Pierre Fredericq Creator: Lederberg, Joshua Date: 30 October 1950 Genre: Letters (correspondence)
7. Letter from Joshua Lederberg to R. S. Benham Creator: Lederberg, Joshua Date: 16 February 1951 Genre: Letters (correspondence)
8. Letter from Joshua Lederberg to Raymond L. Latarjet Creator: Lederberg, Joshua Date: 12 April 1949 Genre: Letters (correspondence)
9. Letter from Joshua Lederberg to Raymond L. Latarjet Creator: Lederberg, Joshua Date: 30 July 1950 Genre: Letters (correspondence)
10. Letter from Samuel J. Ajl to Joshua Lederberg Creator: Ajl, Samuel J., 1923- Date: 21 September 1949 Genre: Letters (correspondence)