Schwarzer Stift ["192mm x 253mm (Blatt)"] 1915-574
Schwarzer Stift ["313mm x 250mm (Blatt)"] 1916-443
Collage ["210mm x 145mm (Blatt)"] 1975-16
Collage ["200mm x 155mm (Blatt)","160mm x 130mm (Bild)"] 1961-3