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 hears you. You lead up to your "Secret of Manhood" in a manner that holds the attention, impresses the truth you want to teach, so that it is sure to be of lasting good.

This lecture I regard as the very best of its kind, which I have ever heard.

Sincerely yours,
W.H. OLIN.
Vice Dean, State Agricultural College of Colorado.

Princeton Township High School.

Princeton, Ill., October 6, 1908.

Dr. Winfield S. Hall of the Northwestern University Medical School recently gave a talk to our high school boys along physiological lines, setting forth very scientifically but plainly many delicate and important truths which every boy should know. Dr. Hall is a master of his subject and his manner is so dignified and yet sympathetic that he commands respect and holds the closest attention. I feel sure that such a talk given to boys and young men does a great amount of good.

Sincerely,
H.S. MAGILL, JR.,
Principal.

International Committee, Young Men's Christian Association.

Chicago, Ill., October 4, 1908.