Letter to Dr. Macleod regarding the application for a United States patent for insulin 11/1922
Riches, Charles H. (Esq.)
4 p. ; 24 x 15 cm.
Autograph letter written of The Raleigh Hotel, Washington, D.C. letterhead and signed by Chas. Riches. Reports on the progress he has had in obtaining a United States patent for insulin.
University of Toronto Archives. A1982-0001, Box 18, Folder 4
Title based on content of item.
Macleod, J. J. R. (John James Rickard), 1876-1935Insulin - Patents