About the video: The book available from www.NineCircles.co.uk - www.Amazon.com Positive Aikido a video of the book and it authors. Henry Ellis and Derek Eastman are both direct students of the legendary Budo master Kenshiro Abbe Sensei 1915 - 1985. The book written by an American student Dave Rogers a student of Henry Ellis. Dave Rogers is the American representative of the Ellis Schools of Traditional Aikido. Ellis and Eastman were students of K Abbe Sensei from 1957. They have studied with legends such as Tadashi Abe Sensei and Masahilo Nakazono Sensei, Masamichi Noro Sensei and many more teachers. www.geocities.com/britishaikido