October 21, 1908.

Dr. Winfield S. Hall, Northwestern University Medical School.
My Dear Dr. Hall:

Our committee wants to know if we cannot arrange a date with you
this year to deliver your lecture on "The Young Man's Problem."
I also want some more of your books on Reproduction and Sexual
Hygiene.

I cannot forbear to express my very hearty appreciation of the
splendid service you have done and are doing to the young
manhood of our country in this lecture and this book. I have
never heard a presentation of the subject which takes hold so
deeply upon thoughtful men, and your book is by all odds the
best thing in print on this subject. Your scientific, yet
popular method and the absence of vague moralizing are
convincing and inspiring in their effects. I trust we may hear
you this year.

Very truly yours,
HERBERT W. GATES,
Secy., Religious Work.

THE SECRET OF MANHOOD

Given to many audiences of boys in High-School, Academy, Y.M.C.A. and
Summer Camp.

The Institute and Training School of Young Men's Christian
Associations, Chicago and Lake Geneva.

October 7, 1908.

Dr. Winfield S. Hall, Northwestern Medical School, Chicago, Ill.

My Dear Dr. Hall:

I want to express my appreciation of your talk to boys on Sexual
Hygiene. I listened with the greatest of interest to your
presentation before the Boys' Conference at Lake Geneva the past
summer and it seemed to me that both in substance and in form of
presentation you hit the nail on the head in a way I had never
before seen it done. I believe that your contribution to boys in
this direction is to be even greater than that which you have
been making to young men.

Sincerely yours,
FRANK H. BURT,
President.

State Agricultural College of Colorado.

Dr. Winfield S. Hall,
Fort Collins, Colo., October 27, 1908.
Northwestern University Medical School, Chicago.

Dear Doctor:

I wish to testify to the value of your lecture to boys from 12
to 16 years of age. You have touched a vital subject in a most
original way that impresses every boy that he