AVD. FOR TUMORBIOLOGI
KARGLINSKA INSTITUTET
‘ STOCKHOLM 60

DEPT. OF TUMOR BIOLOGY
KAROLINSKA INSTITUTET

STOCKHOLM 60 June 6, 1958.

Professor Joshua Lederberg
Department of Genetics
University of Wisconsin
Madison 6, Wisconsin
U.S.A.

Dear JoBhua:

Many thanks for your letter of June 2. From the point
of view of the session on Microbial Genéjcs and the Symposium
I do not see any reason why your presence on Monday, August 4,
would be unavoidably necessary. On the other hand, I know
that Hedén has planned to arrange a session on Cosmic Micro-
biology according to your suggestion and there may be other
official functions at which you might be wanted by the Congress.
I do not know any details about them and particularly I do not
know whether anything of this sort would be going on on Monday}
I have tried to reach Hedén but he is out of town this week
and I shall be leaving next week myself. But perhaps you might
drop him a line and check with him on this matter. From the
point of view of the session on Genetics I do not see any diffi-
culty with your arriving on Monday, August 4, except that I
hope that you will have a chance to talk with your speakers and
disuussers before the symposium. I am very sorry to say that
so far we have only received one abstract for the symposium al-
though they were all due to arrive by May 15. It came from
Jacob. I have written several letters to remember the other three
speakers and I have definite promise from Stocker about an
abstract within a day or two. If you have Cavalli with you,
would you please contact him about this? I am particularly. con-.
cerned about the discussers who really ought to have some idea
about what they are going to discuss.

Please do not feel in any way obliged to stay after the
Congress because of our contribution to your travel expenses.
This contribution was due to the fact that we feel very much
obliged to you for qll the wonderful discussions and suggestions
that came from you. I hope that we cam manage some discussion
during the congress itself. Of course, we should be delighted
the longer you could stay. However, I would not like you to feel
obliged in any way since I know how many committments you have.
I should like to discuss some points with you, also in connec-
tion with your own research, but this ought to be feasible in
one way or another during or immediately after the congress. I
do not intend to go to Uppsala after the Congress. If you can
stay a day or two extra it would be wonderful; if not, we shall
Professor Joshua Lederberg June 6, 1958.

arrange social and scientific discussion during the Congress.

It would be wonderful to do some traveling together
after the congress and we shall certainly give some thought
to this matter. At the moment, however, our plans are in a
chaotic state, to say the least, because of the meeting in
Canada, the Cancer Congress in London and the Congress here
in August. There are so many different factors, scientific,
institutional and familial, interwoven in a single network
that I simply do not see how it will all work out. I am sure
you wibl find this a familiar theme. Please make your own plans
as you like it best fit and as soon as we see how things work
out for us we shall let you know.

I expect to be at Syverton’s laboratory in Minneapolis
next week (Thursday and Friday) before going to Canada. If
there would be anything of urgency that would turn up, you can
reach me there. After the Canadian meeting I shall return im-
mediately to Stockholm and I expect to be back by June 22.

With warmest greetings, also to Esther,
yours as ever,
a ls ~ te
George Klein

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