Brad Edwards wrote:
I love Aikido and the Dynamic Sphere. An EXCELLENT review of the philosophy and execution of Aikido. Has wonderful illustrations.
Don't expect to understand it all on the first read. And the unorthodox naming and numbering conventions can be a bit confusing, but this is an extremely thorough book, and the illustrations are the standard by which all others are measured. Sadly, Oscar Ratti, co-author and creator of those wonderful drawings, passed away not long ago.