Irvin CahnIrvin Cahn studied Ju-Jitsu at the Ju-Jitsu Institute of Chicago as well as Military Ju-Jitsu from the well-known Professor T. Shozu Kawashima [Fifth Black Belt], who was a captain in the United States Army in The First World War. U. S. Mr. Cahn has aught Jiu-Jitsu to both civilians as well as the U.S. Marine Corps. Read More Read Less
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