Salford,
30th June,1953
Dear Professor Lederburg,

Thank you for your letter of the 24th June and also for the
reprints, I found the paper on Salmonella transductions most interesting.

I would, indeed, be interested in continuing work on the snecific

coli, I have now a fair number of strains - some 60 055, a few O11] and
20 026 plus a few other miscellaneous and incompletely characterised
groups, So far I have mainly been attempting to find a basis for epi-
demiological classif ‘cation on biochemical and, more recently, by phage
activity, I am subculturing all the strains tat I have of these thres
main groupes and wil bring , or possibly, send tnem, Unfottunately I
have as yet no strains of the H2 type of 055, I hope, however, to call
on Dr, Joyce Wright when I am in London and borrow some from her, The
question of sera is not quite so easy but I think I can procure some,
The diagnostic OK sera for 0111 and 055 are easily obtained from the
Standards Laboratory in London, the 026 serum is not yet in general
supply nor are the H sera. As you probably know these latter are not

as easily produced, for some reason, as the analagous Salmonella sera,
I shall, however, be visiting the Central Public Health Laboratory and
will endeavour to obtain some of these sera through Dr, Joan Taylor.

If there are any other supplies of this nature which you require please
let me know as I am sure that I can by personal contact obtain them,

I had not knogn that Dr. Anderson had been with you, I am sure
that any accomodation which was able to satisfy his requirements would
be perfectly adequate for mine, The possible petticoat influence, albeit
of advanced years, does not deter me in the sligitest, I would be most.
grateful if you could make some tentative enquiries and arrangements,
bearing in mind that all my arrangements are as yet-not complete.

I hope to see Spicer when I am in London and will most certainly
disctiss several matters with him, Stocker is not, in fact, personally

known to me but,as I shall probably be visiting the School of Hygiene,
I will probably meet him then,

My fiscal, or “inancial, arrangements are not yet complete, but
I am more hopeful again, Time is running rather short but it-is not
possible to hurry the Civil Service. I had hoped on my arrival to
visit my relatives in New Haven but this now depends on my date of
arrival and whether I have sufficient time to fit it in before coming
on to Madison, We shali see what happens.

Thank you for your further offers of assistance,

Yours sincerely,

fe a oe PE oom

A. Bernstein