Don Teach wrote in 070223 MMDigest expressing appreciation for the
tracker bar scales found in Art Reblitz's "The Golden Age Of Mechanical
Music."

The real compendium of tracker bar scales is another Reblitz book:
Treasures of Mechanical Music : a compilation of hundreds of tracker
bar, key frame, and note layouts for automatic music machines, together
with historical and technical information and a collector's portfolio
of outstanding mechanical musical instruments / by Arthur A.  Reblitz
and Q. David Bowers.

That book (ISBN 0911572201) was published in 1981 by the Vestal Press
and is another fifteen-pounder from Reblitz and Bowers, worth its
weight in gold.

Matthew Caulfield,
Irondequoit, New York