Here are some more documents that can be discovered at the exhibition from Le Grand Palais. The image above comes from the 1924 German movie Das Wachsfigurenkabinet by Paul Leni and Leo Birinsky.
I would also recomend reading this morning two excellent articles linked directly or indirectly to the exhibition. One is about the Animation Research Library on IGN.com, the other one, written by Alain Littaye, deals with the exhibition itself.