I agree with you ...

1966

1. Mimeographed on yellow postcard, 8 x 12.3 cm.
Included in "Opus 16. The Private Secretary" diary No.7, No. 0669

2. Typewritten cardboard, 21 x 12 cm.
Included in "Opera without title", No. FX0719

Signed

1. a

1. b

2.