Hello,
That's the first thing I tried!
I also looked at the Beaubourg site and some Picasso sites. Also found a Doisneau site.
I suppose the picture I am looking was taken a the same time as the famous "croissants" photo.
And this morning I went back where I had found the exhibition, but it had moved!
(If you really want to know: the pots of brushes and paint are laid out on a newspaper, showing a bridge column. I love to look for those things...)