Ludwig Sander : 11. Oktober-15. November 1969.
Rotzler, Willy.
Sander, Ludwig,1906-
Gimpel & Hanover Galerie.
Zürich : Gimpel & Hanover Galerie,
[1969]
Cover title: Sander.
Text by Willy Rotzler.
Exhibition catalogue.
Sander, Ludwig, 1906-