1. Letter from Joshua Lederberg to U.S. Senators Alan Cranston and Samuel Ichiye Hayakawa Creator: Lederberg, Joshua Date: [ca. 9 June 1977] Genre: Letters (correspondence)
2. Letter from Roy Curtiss III to Donald S. Fredrickson Creator: University of Alabama in BirminghamCurtiss, Roy , III Date: 12 April 1977 Genre: Letters (correspondence)
3. Letter from Roy Curtiss III to Donald S. Fredrickson Creator: University of Alabama in BirminghamCurtiss, Roy , III Date: 23 September 1978 Genre: Letters (correspondence)
4. Letter from Stanley N. Cohen to Maxine Singer Creator: Cohen, S. N. (Stanley Norman)Stanford University. Medical Center Date: 25 September 1978 Genre: Letters (correspondence)