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Dear Frangois:
I hope this reminder reaches you in good tim.

We would be very grateful to you if you could send us some
of your new phages, which should be invaluable to our studies
of transduction. We would be happy to have whichever of them
you are prepared to send at the present time, with some infor
mation as to their properties (i.e., whether in the Gal~ segment
or not, and whether you have already tested them for transduction).

The materials that would be most appropriate for our immediate
needs would be, say, #363, as a generalized vector of tra nsduction,
and one of the UV-inducible neighbors of lambda.

Dr. Qrskov will be searching for additional phages this fall.
Needless to say, if we can exchange materials, or serve you in any
other way, we will be very happy to do so-- just let us know what
you might be interested-in and we will be on the lookout for it.

Though it was too bad we could not have several more days together
in ammx an undistracted atmosphere, we enjoyed the opportunity we did
have to 'causer' together and with your wife. We will let you know
of our own possible plans to visit Paris, probably about Sept. 10, 1957.

I hear that Elie is coming to the US for a year soon. Good luck
to him, and let me ask you to keep in mind when we may play host to
yourself.

Yours sincerely,

Joshua Lederberg