Quadrat Bottrop, Albers Museum #BERND & HILLA BECHER # 2010, mint
Quadrat Bottrop, Albers Museum #Gotthar Graubner/ JOSEF ALBERS#2011, nm
Quadrat Bottrop, Albers Museum# ED VAN DER ELSKEN,l'amour # 1999,mint
Quadrat Bottrop, Josef Albers Museum # ULRICH ERBEN # 2019, poster, mint
Quadrdat Bottrop, Josef Albers Museum # HANS STEINBRENNER # 1986, mint-