I have also been studying the various metre-gauge tramways with proliferated in the area around Nice.
This next post focusses on one of these tramways which ran from Menton, east of Monaco, to Sospel in the mountains.
https://rogerfarnworth.wordpress.com/2018/02/23/the-sospel-to-menton-tramway-revisited-chemins-de-fer-de-provence-51