Historical clue formulations

• Yarn variety — 2008-02-09
• Embroidery yarn — 2005-11-01
• Twisted yarn — 2004-07-25
• Embroidery yarn — 2003-08-25
• Yarn — 1996-08-17
• Embroidery yarn — 1996-04-11
• Embroidery yarn — 1995-04-11