I stumbled upon this today whilst surfing the net for something else. It’s a book of ‘personal work’ by Moebius, forms and shapes that have no purpose other than for him to express himself in a non-work context. Similar to the method Henry Flint used in his ‘Broadcast’ book – of letting his mind go and just drawing to see what came out – these were collected into a book named ‘Quatre-vingt huit’ (’88) in 1990.
Not all the images are this finished but these are some of my favourites, that he could produce work like this in his spare time is incredible. Apparently it’s now quite a rare book but a quick search will net you a digital copy, hopefully someone will reprint it now that he’s gone.