77/2865 [Calendars]. Kalender 1981. Amst., erven E. van de Geer, 1981, w. typography and design by W. CROUWEL, 12 transparent calendar lvs., interleaved w. 12 offset printed calendar lvs., w. orig. frontwr. and board backcover, 40x40 cm. - AND 7 others, i.a. a similar calendar of the year 1980.