For bellows repair or making, here is a bunch of links:
http://www.hewit.com/acatalog/Skiver__Sheep_.html
http://www.leprevo.co.uk/hides.html
http://www.jamiltonupholstery.co.uk/...ct.asp?dept=30
http://www.chamois.com/skiverleather.htm
http://www.antiqueleathers.com/prices.php
http://www.antique-leathers.co.uk/products/loose.html
http://www.zimeks.com/skiver.htm
http://www.buchbinderleder.de/
http://apps.webcreate.com/ecom/catal...goryFullID=205
http://www.cameraleather.com/
http://www.columbiaorgan.com/col/skins.htm#CPL%20Clock

Good Luck
Gordon