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Hygower. Weateent, London ( Gower S treet )
/ W.Cc.1.
Department of Bacteriology
and Immunology:
Peon J. c. crvrcmsnanm 3rd December, 1952.
Professor J, Lederberg,
Department of Genetics,
University of Wisconsin,
Madison 6,
WISCONSIN, U.S.A.
Ye
Dear John,
Here are the strains; they are -
My_No. Colindale No. Character Origin
SL 13 Sal 25/52 I, II, XII - ? Kauffmann (I will
S para A, 0 form find out if I can
ow 448 from Felix)
SL 14 Sal 26/52 Ff " "
sw7 YG
SL 15 Sal 1067/52 IV, XII - Patients! faeces, at
Portsmouth
SL 17 Sal 1066/52 Iv. XII - "

(Joan Taylor tells me that no close connection could be traced
between the two children infected by Sl 15 and 8L 17, but I

have assumed the strains are identical. )

SL 18 Sal 1565/52 eh V. XII -
tem phage e
on) typ

SL 20 Sal 1878/52 IV. V.e XII «

(t-m phage type
2A)

SL 21 Sal 1879/52 IV. V. XII -
(t-m phage type
2A)

Patients! faeces, at
Woolwich

Patients! faeces, at
Neasden

From contact of case
yielding SL 20
Zo

SL 31 - I. IZ. XII i (mono- sb 13/FA.LTe.
phasic except for ?
‘artificial' phase)

SL 46 Nc} 73 S. tem ‘Binns!
Sw - Sal 1231/52 III. X - Blood culture ,Fayid.
- Sal 1168/52 III, X = ? *
- Sal 1169/52 III, X = _

Yours sincerely,

Gu

B.A.D. Stocker

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