Typescript letter written on the Offices of Charles H. Riches letterhead and signed by Charles H. Riches. Letter regarding the Eli Lilly Company and Walden's application for a patent for precipitating the anti-diabetic hormone by adjusting the hydrogen ion concentration to the isolectric point of the substance or substances in solution. Riches gives his opinion of this application in connection with the Banting, Best, Collip patent and states that 'these product claims have been drawn for the deliberate purpose of securing to the Eli Lilly Company a monopoly in the United States of the production and sale of Insulin by any method whatsoever, and conflicts with the policy of the University in doing the greatest good for the greatest number. '
