NEW YORK STATE COLLEGE OF AGRICULTURE
CORNELL UNIVERSITY

ITHACA, NEW YORK

 

LABORATORY OF BACTERIOLOGY

July 5, 1949

Dr. Joshua Lederberg
Genetics Department
University of Wisconsin
Wadison 6, Wisconsin

Dear Josh:

Refrigerators are wonderful things! While digging _
out some phage stocks to take to Oak Ridge I stumbled across
some old mannitol ad xylose plates of H168. From these I will
be able to isolate a xylose segregating H168. I have smt
16 isolates as indicated on the enclosed diagram.

Since I am leaving for Oak Ridge in a halfenour I will
not have time to prove the cultures but I think some of them
at least should be OK. My address at Oak Ridge will be:

c/o Dr. Alexander Hollaeder
Biology Department

Oak Ridge National Laboratory
Oak Ridge, Tennessee

I hope the xylose segregating cultures will help solve
the puzzle a bit and renove any doubts from your mind as to
the behavior of theoriginal Hil68 culture.

Very truly yours,

Me R. Zelle

MRZ sje