September 9, 1968

Dr. Stanley F. Yolles
Director of National Institute
of Mental Health

5454 Wisconsin Avenue

Chevy Chase, Maryland

Dear Dr. Yolles:

Do you have any data on the time trend of statistics on runeway
children? I have tn mind some quantitative measure of the
impact of the drug culture and some angwer to the concern
whether the drugs are simply an alternative manifestation of
an ancient phenomenon or whether there has been a dramatic
inerease in it. I realize there are many other bases for

such trends, but I am just curious about whether there are

such statistics.

Sincerely yours,

2

Joshua Lederberg
Professor of Genetics

JL:lh