Lloyd Burton wrote in MMD 981017:

> I would like to know if someone has a Tangley model 43 blower and
> vacuum box.  I would also like to know the pressure amount and vacuum
> mount needed to operate the brass pipe organ.  The unit uses an
> A-roll and can be played by hand.  I would appreciate any assistance.

Get a Grainger catalogue and order two vacuum motors.  Use one on
vacuum for the player, use the other as the blower for whistles.  This
has worked for me for 30 years.

Bob Vivian