Narrow gauge railways in France

We don't know which railway these photos were taken on. Can you help us classify them?

• CF Cappy-Dompierre (10 images)
• CF de Baie de Somme (21 images)
• CF du Vivarais (19 images)
• Chemin de Fer Touristique du Tarn (6 images)
• Chemin fer de La Mure (4 images)
• Corsican Railways (1 images)
• Industrial (6 images)
• Le Treajn Du Bas Berry (1 images)
• Pithievers (7 images)
• Tramway Forestier du Cap-Ferret (1 images)