15th Septenber, 1947.
vear Lederberg,

¢

i.am glad to hear that the relations of two- and
fcure strand crossing over eventually got themselves
Sorted out. You seem to have foumd the mathenat ica
of crossing-over and recombination as fascinating as
I did. Unfortunately the limit is sct very sharply to
one's activities in this field by the limitetions ar
available data; as I suppose is the case in almost every
, branch of genetics. I shall look forward very much to
seeing your paper in "Gemetioa",

‘lay I congratulate you on your appointment to
«iseonsin. I paid it only a very short visit, but I
found both liadison, and the staff of the University,
very enjoyable, Please give my best wishes in particular
to Drs. Brink, Huskins, Larsen and Neale.

Dre Darlington asks me to say thst he hepea the
Paper you vere preparing for "Heredity" will not be lost
in your westward move.

Best wishes to wre.. Lederberg and yourself,

Yours sincerely,

Dr. J. Lederberg,

Dept. oi Senetics,
University of Wisconsin,
Hladison ,, “«isconsin, U.S.A.

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