Yves Klein also wrote a book: http://www.amazon.com/Yves-Klein-The-Foundations-Judo/dp/0956173802
I recall reading somewhere, that he filmed Japan's greatest postwar judoka at the Kodokan, producing a lot of footage and keeping only the best of numerous shots each. I have no idea where this footage ended up though. There was a post on a board somewhere saying some of it is included in Hal Sharps DVDs...