Hi all,  I would like to thank Mike Knuder and Scott Olson for
their feedback.   I suspected that small barrel organs had their pipes
tuned for one pressure, but I could not find any info on the subject.
I built a nice pipe a year ago but I became discouraged when the pipe
created a second tone when the air pressure was increased.

Yesterday I went looking on the web for more organ pipe info and
I found the following sites.

A Whistle Pattern: This site shows how to make a very simple whistle.
To date this is the easiest whistle design I have found.

    http://wwwoodcarver.com/WWWEzine/Vol2Issue1/WhistlePattern/
    WhistlePattern.html

"The Art of Organ Building", by George Ashdown Audsley:  After reading
this review of the book, go to the home page and go to Authors page and
locate "Audsley" and you will see both volumes of the book are under
forty dollars.  This site also has high end MIDI equipment for sale.

    http://www.midi-classics.com/p4908.htm

John Conrad Kleinbauer

 [ "The Art of Organ-Building", two-volume set, paperbound:
 [ Vol 1. ISBN 0-486-21314-5 , Vol 2. ISBN 0-486-21315-3
 [ I bought both volumes recently for US$ 17.95 each.  -- Robbie