18 3 Linen Thread
Crawford Waxed Linen Thread for Bookbinding
Threads No 3
Colophon's Best Linen Thread — Colophon Book Arts Supply
Black 3 Ply Thread
Twisted Wax Thread
Linen Thread - UK
Non Waxed Thread
Londonderry Thread 18/3 - John Neal Books
Sewing Thread 18/3 Natural/Unbleached - Conservation Supplies Australia
Linen Thread - Product Type - Supplies
Linen Thread, 3-ply, 50g Spool, German Non-waxed, for Bookbinding, Leather Sewing, and Many Other Traditional Crafts - Sweden
3 Ply Waxed Linen - UK