1. Letter from Janet E. Mertz to Daniel Nathans Creator: Mertz, Janet E.Stanford University. Medical Center Date: 9 August 1974 Genre: Letters (correspondence)
2. Letter from Paul Berg to Daniel Nathans Creator: Berg, PaulStanford University. Medical Center Date: 13 September 1977 Genre: Letters (correspondence)
3. Letter from Janet E. Mertz to Daniel Nathans Creator: Mertz, Janet E.Stanford University. Medical Center Date: 20 December 1974 Genre: Letters (correspondence)
4. Letter from Paul Berg to Daniel Nathans Creator: Berg, PaulStanford University. Medical Center Date: 6 February 1978 Genre: Letters (correspondence)
5. Letter from Paul Berg to Daniel Nathans Creator: Berg, PaulStanford University. Medical Center Date: 11 June 1973 Genre: Letters (correspondence)