John Heinz
Prototech Engineering
5 Hunter Ave.
Joliet IL 60436
e-mail:jwheinz@juno.com

Gene Liberty
The Ultimate Guitar Repair Shop
112 S. Bushnell St.
Sheridan IL 60551
e-mail:guitarfix@snd.softfarm.com
http://www.snd.softfarm.com/guitarfix

Rich Westerman
x-luthier
6780 Warren
St Anne, IL 60964
e-mail:musicadtk@keynet.net
http://execpc.com/~danb/mandolin/westerman.html