[Archive of Wim Beeren. Sonsbeek '71] Various items: (1-5) Claes Oldenburg. "Trowel

stuck in the ground". 5 blueprints (incl. 1 double), for the famous "blow-up" sculpture, the smallest in A4-size and by Bouwadviesbureau J.G. Heijckmann, the remainder by Sanders Verenigde Bedrijven N.V. Arnhem and with dimensions 55 x 84 cm. (2x), 76 x 112 cm. and 86 x 140 cm., dated 15-2-1971 to 8-6-1971, folded.

(6-20) "Casual art". Series of 15 photocards, each 9 x 14 cm. and (all but one) addressed on reverse to Wim Beeren with Dutch postage and stamping on various dates in 1971, one card with inscription "Sonsbeek '71", all cards with differently stamped number, six cards with salutation "Hi!" (incl. the card without poststamps, this one also with monogram KS and EE in pen). One card with turned corner. "Mail art" series, of which we were unable to trace the artist; Kenneth Snelson from the catalogue Sonsbeek '71 has similar initials. (total 21)