Comments by readers and scholars
Ever since 2009 the author has received many personal comments from readers, happy with the book's structure, coverage, presentation and cost.
Specifically about the 3rd edition, one of the leading specialists in keyboard tuning and temperament in the U.S.A., Fred Sturm from the University of New Mexico, has recommended it in the online forum of the Piano Technicians Guild (July 2013), stating that: “It is the most comprehensive and reliable source for information about temperament history available today”.
The world-leading temperament scholar Prof. Patrizio Barbieri, author of many important works including the recent treatise on Enharmonic Instruments and music, has recently written to the author—with permission to publish—that Unequal Temperaments in its 3rd ed. is most likely to be the best treatise in the field.