I have had great success with Transparent Mending Tissue from Lineco,
products L533-0017 and 533-0198.  It's very thin with good adhesion,
acid free, and comes in a number of widths from 1/16-inch to 1-inch.

Jim Quashnock

 [ See http://www.lineco.com/cart.php?m=product_list&c=1243 
 [ http://www.lineco.com/cart.php?m=product_list&c=579 
 [ http://www.lineco.com/cart.php?m=product_list&c=1247 
 [ -- Robbie