June 9, 1958
Dear Frits:

Yours of the 6th just received. Your suggestion of driving from
Copenhagen to Stockholm is a very attractive one, and we will hasten
to accept. IJ have just heard from George Klein that it would not be
too serious for us to arrive moderately late on Monday evening, so it
should no$ be impossible for us to plan according to either of your
suggestions. It seems to us it will not be urgent to decide definately
until we have seen you.

I should have realised that Ida would not be travelling 30 soon with
your newborn, but you Danes are so sturdy, it did not occur to m that this
would really be 2 serious limitation. In any case, forgive us for not having
hastened to send our felicitations sooner.

Although we may make some last-minute xkmt alterations, we expect to
fly from Paris to Copenhagen on the SAS flight 566 already mentioned
and unless you hear to the mmuttxy gontrary, we will be on it Saturday evening.
Could you send us your addresses and phone numbers in case we have to reach
you at short notice? (Our plan is to take the earliest plahe from Paris after
noon, and this wili almost certainly be 3K566. But check the locnl office for
the actual hour of arrival.)

We have decided not to mke very defihite plahs for further travel until
we have reached Stockholm and could talk it over with George Klein, so
we can leave this until we see you in Copenhagen.

We look forward to seeing all of you again,

Yours,

‘ f
\ f. .
> Ty

Joshua Lederberg

P.S. On a recent trip to California, I found mysalf sitting next to a very
interesting fellow muamt who eventually turned out to be Sorkin from your
institute. He told me how warmly you spoke of Madison, and in fact visited
us briefly in Madison a couple of weeks later.