Die Benachrichtigung
- Document's type: Programme
- Author: Jan Grossman (Author of foreword) / Zdeněk Hořínek (Author of foreword)
- Date of origin: 21.06.1969
- Record's ID: 59180
Hamburger Abendblatt 1969/č.136, str. 22: In der Mühle Bürokratie
- Document's type: Press cutting
- Author: Mathes Rehder (Author)
- Date of origin: 14. června 1969
- Record's ID: 59253
Hamburger Abendblatt 1969/č.142, str. 7: Büro-Terror durch Ptydepe
- Document's type: Press cutting
- Author: Walter Herrmann (Author)
- Date of origin: 23. června 1969
- Record's ID: 59252