International Judo Federation (http://ijf.org)
Judo Information Site (http://judoinfo.com)
United States Judo Federation (http://usjf.com)
US Judo (http://usjudo.org)
Seattle Dojo – Wikipedia Article (https://en.wikipedia.org/wiki/Seattle_Dojo)
Seattle Dojo – Facebook Group (https://www.facebook.com/seattledojo)
Vice – Fightland Blog – INSIDE THE FIRST JUDO DOJO IN THE CONTINENTAL UNITED STATES