Opus 20. Versions of the museum "den Frie"

Three mimeographed sheets, 29.7 x 20.8 cm.
Edited by the artist and signed

1. Instructions of the opus

2. Version to the museum "den Frie"
    a. room number 2
    b. room II

Archived in the first ring binder, "Opera with title", No. FX1464