Schaff Piano Supply sells a high grade Australian rubberized cloth
for use on reed organs.  Although not cheap, quality is excellent.
I have used this material on several instruments and have had excellent
results.

For additional information regarding restoring reed organs go to
"The Reed Organ Man" (http://www.reedorganman.com/) and/or go to
the following web site:  http://cdmnet.org/cgi-bin/mailman/listinfo/ro

Best wishes,
Tom Gregory
Waukesha, Wisconsin, USA