Madison , Wisc.
Mey 29, 1948.
Dear “aron,

You will, I know regard these business letters as addressed both to
Szilard and yourself.

Thank you for your note on the rsults of the phage-recombination-test
experinent on K-12.... I am not clear, however, whether you have had any
indication that recombination occurred. “ere all of the nutritional tests
of the parental types?

Before you leave, { would appreciate it very much if you could send
me sowe stocks of a decent titer of the phages T1-T7 (including T3k.) T-1
45 the only decent stock I havenow, and I am not certain that it is not contaminated
with T5. -

I just sent you the two Bemelmans books I borrowed. Thanks very much.

Best regardsg

sincerely,

Joshua Lederberg