October 15, 1950.

Dre le Ge Dunn,
Dept. Zoology,
Colunbia University,
New York 27, N«¥.

Dear Dre Dunn:

Enclosed you will find two copies of my MS for Genetics! Fifty Years.
Ap the dateline indicates, I have satisfied at least my own censcience

in getting it to you by the deadline. However, I hope that my unavoidable
tardiness will not delay the publication.

Duplicate copies of photographs for the figures are enclosed, except for
figures 4 and 5, of which only the original sketoh is incluied.

Two references are cited with pagination "000-000". These are papers

Which are due to appear momentarily, an@ for which I will correct the
reference in proof’.

Sinoersly,

Joehun Lederberg,
Associate Professor of Genetics