My online Wurlitzer 165 roll catalog web site http://wurlitzer-rolls.com/
has complete tracker bar and instrumentation specifications for the 165
scale.  I can send JPEG images of the tracker bar layout information
for the 125 and the 150 roll, taken from "Treasures of Mechanical
Music" (by Art Reblitz and Dave Bowers), to anyone who needs them.

Matthew Caulfield
Irondequoit, New York