[With 2 colour etchings] W. Sandberg. Anton Heyboer. Geh durch den Spiegel
Galerie der Spiegel, Köln, 1960. 34 p. Biography, listing 62 works all depicted and described. Original pictorial paper-covered boards designed by Heyboer. Folio (38 x 26.5 cm) One of 200 copies. Including 2 original (one double-page) colour etchings.