https://activistjourneys.wordpress.com/eisel-listed-videos/
It is actually pretty difficult to access old videos (on à-bas-le-ciel) via the normal Youtube interface: they may fix/improve that interface (the corporation has recently made many changes)… but… for the time being… this clickable list made by Patreon-supporter Theo is a huge help.
The channel already has over 700 videos (as of August, 2017)… I don't know if the list will be updated/maintained, but it is already useful for accessing the earlier history of the channel.