0. 24 x 16 cm, 63 pp + 26 ill., orig. wrappers.
"0. Liège, Musée de l'Art Wallon; 1966 September 30 , 24 x 18 cm, 132 pp + 52 coloured and b/w plates h.t., orig. stiff wrapper. Text in French."
"0. Turnhout, Brepols, 1920, published in the series; Les Grands Belges. 18 x 13 cm, 34 pp, orig. wrappers."