Hi All,  I'll throw my six bits worth in.  A reliable source for
bellows cloth and any other materials is Organ Supply Industries
in Erie, PA.

Prices vary from $31.50 for a square yard to $50.00, with a 5%
discount on 50 yards per item.  This may seem a bit high, but I've
used this stuff from them and I haven't had a bit of trouble yet.
They also have a great supply of leather, in all kinds of textures
and thickness.

Just a little extra info on this company:  Organ Supply currently
owns Reisner, Mayland and Deagan Chimes companies.  And by the way,
they also make a cute little monkey organ in several styles.  Here
is their address:

  Organ Supply Industries
  P.O. Box 8325, Erie, PA 16505-0325
  Phone: 814-835-2244 ; Toll Free: 800-374-3674 ; Fax: 814-838-0349
  Shipping Address:  2320 West 50th Street, Erie, PA 16506-4928

Check it out, and get their catalog.  Have fun.

Best Rollgards,
Gordy Forcier
perrrfectguy@webtv.net