Matsuyama, Frank.

Frank Matsuyama was an instructor in martial arts known as Yawara. He brought this form from Japan in 1903. Matsuyama instructed many police officers in the use of the Yawara stick that he invented in 1948.

From the description of Frank Matsuyama scrapbook, circa 1929-1948. (University of California, Berkeley). WorldCat record id: 71002186