Allen Ruppersberg, Sunday Quality , Conceptual art# 24 PIECES # 1970, nm+
Art & Project # ALLEN RUPPERSBERG, Bulletin 105 # 1978, mint-
Art & Project # GER VAN ELK , invitation # 1979, nm++
Art & Project # LAWRENCE WEINER # announcement, 1971, mint--
Barbara & Michael Leisgen # LA TENTATIVE DE SAUTER PAR DESSUS L'HORIZON# 1975, nm+
Donald Karshan, The New York Cultural Centre # CONCEPTUAL ART AND CONCEPTUAL ASPECTS # 1970, nm
Stedelijk Museum # LAWRENCE WEINER # poster, 1989, nm+
Stedelijk Museum Amsterdam # KRISTJAN GUDMUNDSSON, Circles # artist book,mint--
Utrechtse Kring, Long, Weiner ao # KONSEPTUELE KUNST # 1972, nm
van Abbemuseum # RICHARD LONG, Countless Stones # 1983, mint