Item is a photocopy of 14 typescript pages. Includes: affidavit signed by Banting, Best, and Collip; an outline of the procedure for obtaining the extract, signed by Banting, Best, and Collip; a copy of the letter enclosing the documents sent to the Patent Office by Charles H. Riches, the University's patent advisor; and a copy of the Patent Office's Application form, dated Jan. 12/15, 1923.