A correspondent has queried my assertion that Theo Middelkamp won the 1947 Worlds Road Race using Simplex gears. Well, I admit that I don't have much evidence to back up my claim - but this advert does list his win as a victory for Simplex derailleurs.

(Source gallica.bnf.fr/ Bibliothèque nationale de France)

• Publisher: L'Équipe
• Country: France
• Date: October 1947
• Derailleur brands: Simplex
• Derailleurs: unspecified