For official use only.

• Picture: Rare occasion that I wear a necktie.
  I love to dress up, but it just doesn't happen very often.
  The necktie with the Dutch windmills was offered to me
  by Gerard 't Hooft at his visit to Coimbra in June 1996.
  
  
• Tie-a-Tie.net (Learn How to Tie a Tie)
  
• The Necktie Repository
  
• How to Tie a Necktie
  
• Wearing instructions
  
• Sobre nós de gravatas
  
• Web Ties
  
• Wild ties