1. Letter from Daniel Nathans to David C. Ward Creator: Nathans, Daniel, 1928-1999 Date: 24 June 1971 Genre: Letters (correspondence)
2. Letter from David C. Ward to Daniel Nathans Creator: Imperial Cancer Research Fund (Great Britain). LaboratoriesWard, David C. Date: 2 August 1971 Genre: Letters (correspondence)
3. Letter from Daniel Nathans to Ernest Winocour and Maxine Singer Creator: Nathans, Daniel, 1928-1999 Date: 11 July 1972 Genre: Letters (correspondence)
4. Letter from Ray Wu to Daniel Nathans Creator: Wu, RayNew York State College of Agriculture and Life Sciences Date: 11 December 1973 Genre: Letters (correspondence)
5. Letter from Daniel Nathans to Ray Wu Creator: Nathans, Daniel, 1928-1999 Date: 20 December 1973 Genre: Letters (correspondence)