I'm hoping someone out there can answer the following for me:

On page 252 of the Treasures of Mechanical Music a Reproduco Piano Pipe
Organ is illustrated with a boxed rotary pump, of the type I presume
used to produce both pressure and vacuum.

Was the pump sufficient for the pipes present in the lower section,
or was an external turbine used as well?

Was a turbine used when pedal Bourdons were present behind the case?
I would imagine it would have to be.

Thanks in advance for the help.

By the way, I noticed that George Bogatko's new A-roll will soon be
available.  I have had the pleasure of hearing several of the files
being used to produce the roll and would encourage anyone who can use
an A-roll to purchase this one from George.  It's well worth the money!!

Cheers,

Stephen Goodman