Gregory, I am one of the authors of the book you reviewed. Thank you for pointing out some mistakes. Though we proof-read our work diligently some 20 years ago when the book was translated - I'm sure there are still mistakes in it.
You are right and wrong at the same time!
I'm afraid you are wrong, because all diagrams on this page are correct to the dot.
You are right, because there is something wrong on page 22, but it is not what you meant. Instead of abcdefg the white keys of our diagrams on this page (as far as I can see only on this page) are named ahcdefg. Why is one key named incorrectly? Please let me explain.
The book was written in German. The German letters for the white keys are not abcdefg but ahcdefg. Why h? Because many centuries ago some scribe didn't close the lower part of the b, making it look like an h. Others copied that mistake and so Germans are stuck with this stupidly irregular musical alphabet". So the guys who transferred our book into English simply forgot to change the name of the white key under c from h into b.
I will notify the publisher, and I do hope he will correct that minor mistake. In the meantime nobody will play a wrong chord here because - like I said - all dots are at the right spot.
Should you need help with our book, please don't hesitate to drop me a line: info@pacificproductions.com. Thank you for your support.
Regards, Jacky