His first book was called Aikido and the Harmony of Nature.
You mentioned the book... that reminded me of when I started Aikido. The book was due out "in the Spring"... when Spring came no book... we'd ask Sensei again and get the same answer, "in the Spring". That book was due out "in the Spring" for ten years. Finally, it was published in France by Sedrirep where it was a huge success. The first English version was an import. only later did it get republished here by Shambala. Anyway, I still remember how we looked forward to when the book would come out, only to find it would be another year.