April 27, 196

Mr. Frederick H. Murphy
Holden-Day, Inc.

728 Montgomery Street

San Francisco 11, California

Dear Mr. Murphy:

| have given the matter considerable thought and have decided not
to accept your Invitation to join Holden-Day as consulting editor for
your series In Molecular Biology.

During Dr. Lederberg's recent visit here | discussed the question
with him and the opportunity Is Indeed inviting. However, | have decided
not to get Into any more activities at this time. It is simply a matter
of believing that # have already essayed to do more than | am able to
do well.

t reallze that this would not be a large time commitment, but at
present |} would hate to take on another 10 seconds!

Thank you for sending the copy of the Methodology in Human Genetics.
ft is a good start.

Sincerely,

James F. Crow

JFC/ea

cc: Or. Lederberg

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