Author : O'Brian John J.
Title : A complete course of jiu-jitsu and physical culture
Year : 1905

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We know that you will find interest in reading and demonstrating to your own satisfaction the effectiveness of Jiu-Jitsu, in its mildest form, as a means of self-defense. This is the first time that all the secrets of the Japanese national system of physical training and self-defense have been given to Western people. Less than a generation ago you could not have obtained this knowledge at any price. So religiously have the principles of Jiu-Jitsu been guarded that no foreigner has ever before received official instruction from one who has taken the highest degree in the art. ...