31. Letter from Daniel Nathans to Paul Berg

Date:

23 July 1973

32. Letter from David McConnell to Daniel Nathans

Date:

7 September 1973

33. Letter from Daniel Nathans to David McConnell

Date:

9 October 1973

34. Data on SV, JC, and BK cleavage

Date:

14 October 1973

35. Letter from Bernard Weisblum to Daniel Nathans

Date:

16 November 1973

36. Letter from Daniel Nathans to Bernard Weisblum

Date:

11 December 1973

37. Letter from Ray Wu to Daniel Nathans

Date:

11 December 1973

38. Letter from Daniel Nathans to Ray Wu

Date:

20 December 1973

39. A Colinear Map Relating the Simian Virus 40 (SV40) DNA Segments of Six Adenovirus-SV40 Hybrids to the DNA Fragments Produced by Restriction Endonuclease Cleavage of SV40 DNA

Date:

February 1974

40. The Isolation of Simian Virus 40 Variants with Specifically Altered Genomes

Date:

March 1974