1. Letter from David McConnell to Daniel Nathans

Date:

7 September 1973

2. Letter from Daniel Nathans to David McConnell

Date:

9 October 1973

3. SV 40 Prep

Date:

31 March 1969

4. SV 40 Prep

Date:

[ca. 1969]

5. Lab notes on transformation of BALB 3T3

Date:

[9-21 March 1971]

6. Lab notes of electron microscopic images of E. coli B DNA

Date:

9 September 1971

7. Lab notes on identifying SV 40 proteins in infected cells

Date:

[September-December 1969]

8. Lab notes on determining fragments made by Hind on SV 40 DNA

Date:

[24-28 November 1970]

9. Specific Cleavage of Simian Virus 40 DNA by Restriction Endonuclease of Hemophilus Influenzae

Date:

December 1971

10. Letter from Roy D. Schmickel to Daniel Nathans

Date:

29 September 1976

11. Bidirectional Replication of Simian Virus 40 DNA

Date:

November 1972

12. Letter from David C. Ward to Daniel Nathans

Date:

2 August 1971

13. Letter from Daniel Nathans to David C. Ward

Date:

24 June 1971

14. Letter from Ernest Winocour to Daniel Nathans

Date:

23 July 1969

15. Letter from Daniel Nathans to Ernest Winocour

Date:

18 August 1969

16. Evolutionary Variants of Simian Virus 40: Cloned Substituted Variants Containing Multiple Initiation Sites for DNA Replication

Date:

[July 1975]

17. Biological Activities of Deletion Mutants of Simian Virus 40

Date:

December 1976

18. A Transcriptional Map of the SV40 Genome in Transformed Cell Lines

Date:

[January 1975]

19. Studies of SV40 DNA: VI. Cleavage of SV40 DNA by Restriction Endonuclease from Hemophilus Parainfluenzae

Date:

[February 1973]

20. Letter from Daniel Nathans to Roy D. Schmickel

Date:

8 October 1975