Picasso to Lichtenstein : masterpieces of twentieth-century art from the Nordrhein-Westfalen collection in Düsseldorf /
Schmalenbach, Werner.
Twohig, Sarah O'Brien.
Kunstsammlung Nordrhein-Westfalen (Germany)
Tate Gallery.
London : Tate Gallery Publications,
1974.
'Published by order of the Trustees [of the Tate Gallery] ... for the exhibition of 2 October-24 November 1974' - title page verso
Kunstsammlung Nordrhein-Westfalen (Germany)
Painting, Modern