The Seventh Dragon: The Riddle of Equal Temperament (2nd Ed.) was published by Anita T. Sullivan and Unlimited Publishing LLC.

We provided some light manuscript editing, created or recreated illustrations and diagrams, typeset the pages and designed paperback (shown here) and hardback covers. We also designed promotional bookmarks.

Charles loved working on this book. The blend of math, science, music and art makes for one of the most beautiful and intellectually stimulating of books. A must-read for music lovers, especially piano owners and piano players.