2. Verviers , Société Royale des Beaux-Arts, 29 May 1949. 20 x 16 cm, 36 pp, b/w ill. orig. wrapp.
2. Mechelen, 1967, Portfolio, 40 x 30 cm, ca. 16 pp with 17 coloured & b/w ills, loose in publisher's portfolio.
2. Bruxelles, Académie royale de Belgique, 1993, in-8°, 109 pp, bibliography , sewn, orig. stiff wrapper. Text in French. Livre en français.
2. 20 x 16 cm, 36 pp, b/w ill. orig. wrapp.(text in Dutch).