Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Koptische Kunst. Christentum am Nil: Essen (1963?). Pp. 208; many black and white pls.; 14 color pls., Nachtrag, Zurich (1964?). Pp. 79; 19 pls. Catalogue of the exhibition of Coptic art held at the Kunsthaus, Zurich, 1963–1964
koptische kunst. Christentum am Nil: Essen, 1963. Pp. 628 (pp. 453–617 are pls., including 16 in color). Catalogue of the exhibition of Coptic art held at the Villa Hügel, Essen, 1963
L'art copte: Paris, 1964. Pp. 287; many black and white pls.; 12 color pls. Catalogue of the exhibition of Coptic art held at the Petit Palais, Paris, 1964