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The Joshua Lederberg Papers

Title:
Letter from Joshua Lederberg to Barbara J. Bachmann pdf (86,430 Bytes) transcript of pdf
Letter from Joshua Lederberg to Barbara J. Bachmann
Description:
Item is handwritten. Item is a photocopy.
Number of Image Pages:
2 (86,430 Bytes)
Date:
1982-12-20 (December 20, 1982)
Creator:
Lederberg, Joshua
Recipient:
Bachmann, Barbara J.
Rights:
This item is in the public domain. It may be used without permission.
Relation:
Lederberg Grouping: Correspondence E
Box Number: 30
Folder Number: 64
Unique Identifier:
BBAQAL
Accession Number:
78
Document Type:
Letters (correspondence)
Language:
English
Format:
application/pdf
image/tif
Physical Condition:
Good
Series: Correspondence, 1935-2002
SubSeries: 1978-1984
Folder: Bachmann, Barbara J.
Transcript:
B Bachmann
Yale
[stamped, DEC 20 1982]
K-12 history
To the best of my recollection, I got "K-12" from Ed Tatum when I came to Yale in March 1946, and kept my own stock of it. I have no record of re-clonings; but from a very early time I followed the possibility of minimizing recloning of a stock culture. If an identifiable variant (colony morphology, etc.) were noticed it would be given a distinctive stock number.
I have no recollection that K-12 was ever lost or contaminated so as to call for a recall or reisolation. But without an exhaustive search through my correspondence (a 10 year task) I can't be sure. You might do well to ask Larry Morse (Denver) if he remembers anything in that line.
Do also keep in mind the first step mutants from K12:
58, 679 (Ed's auxotrophs)
W1244 AzR
W1485, 1872 lambda-sensitive
that are fairly ancient.
[END PAGE ONE]
[BEGIN PAGE TWO]
Frits and Ida Orskov dropped by the other day. I asked them about Levin's "reisolation" of K-12. He pointed out they were merely "zymotyped" and have not been sero-typed.
Yours
Joshua
Thank you!
about the linkage chart.
PS can you spare another reprint of 1980. Micr Rev?
Metadata Last Modified Date:
2007-01-12
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