1. Letter from Daniel Nathans to David C. Ward Creator: Nathans, Daniel, 1928-1999 Date: 24 June 1971 Genre: Letters (correspondence)
2. Letter from Daniel Nathans to Ernest Winocour and Maxine Singer Creator: Nathans, Daniel, 1928-1999 Date: 11 July 1972 Genre: Letters (correspondence)
3. Letter from Daniel Nathans to Ray Wu Creator: Nathans, Daniel, 1928-1999 Date: 20 December 1973 Genre: Letters (correspondence)