Akademie der Kunste, Berlin, 1969 - also at Gemeentemuseums, Den Haag (oppened) and Stadtische Kunsthalle Dusseldorf (individual catalogues)

Curator: Enno Develing, with texts in German by Lucy Lippard and Develing

Andre, Carl
Bladen, Ronald
Flavin, Dan
Grosvenor, Robert
Judd, Donald
LeWitt, Sol
Morris, Robert
Smith, Anthony
Smithson, Robert 
Steiner, Michael
Discussed at length in: Minimalism: Art and Polemics in the Sixties