[GRASSET (Eugène). Histoire des quatre fils Aymon, très nobles et très vaillans chevaliers. Paris, Launette, 1883. In-4, illustrated ivory percaline, smooth spine decorated, gilt head (Publisher's binding). Edition decorated on each page with colour compositions by Eugène Grasset, engraved by Charles Gillot. This was the first book to be printed using the new photogravure and chromography process invented by Charles Gillot. This work was belatedly recognised as a precursor and herald of Art Nouveau. Binding very slightly faded.