51. Letter from Ernest Winocour and Maxine Singer to Daniel Nathans Creator: Singer, MaxineWinocour, ErnestThe Weizmann Institute of Science Date: 4 July 1972 Genre: Letters (correspondence)
52. Letter from Daniel Nathans to Ernest Winocour Creator: Nathans, Daniel, 1928-1999 Date: 1 December 1971 Genre: Letters (correspondence)
53. Letter from Ernest Winocour to Daniel Nathans Creator: Winocour, ErnestThe Weizmann Institute of Science Date: 4 November 1971 Genre: Letters (correspondence)
54. Letter from Daniel Nathans to Paul Berg Creator: Nathans, Daniel, 1928-1999 Date: 20 September 1976 Genre: Letters (correspondence)Notes
55. Letter from Daniel Nathans to Paul Berg Creator: Nathans, Daniel, 1928-1999 Date: 23 July 1973 Genre: Letters (correspondence)
56. Letter from Paul Berg to Daniel Nathans Creator: Berg, Paul Date: 9 September 1976 Genre: Letters (correspondence)
57. Letter from Maurice R. Hilleman to Paul Berg Creator: Merck Institute for Therapeutic ResearchHilleman, Maurice R. Date: 10 July 1973 Genre: Letters (correspondence)
58. Letter from Paul Berg to Daniel Nathans Creator: Berg, PaulStanford University. Medical Center Date: 11 June 1973 Genre: Letters (correspondence)