My random translations of the photo captions, clockwise from top left are:

• Course 1942
• Route Touriste 1946
• Route Touriste
• 1946

I think that the correct labels might be:

• Huret Dural Competition 1942
• Huret Route Touriste 1946
• Huret Route Touriste
• Huret Course Compétition 1946

• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: Huret
• Derailleurs: Huret Dural Competition, Huret Course Compétition, Huret Route Touriste