classicvintagecycling: Tour de France, 1937, passing the Arbois Vineyard in Franche-Comte.1937 was t
classicvintagecycling: Tour de France, 1937, passing the Arbois Vineyard in Franche-Comte.1937 was the first Tour in which derailleurs were permitted. The eventual winner, Roger Lapébie, is the first rider to complete the race using a modern (Osgear) derailleur. -- source link