30 x 21cm, 4pp offset leaflet. An open letter to Herr Dieter Brusberg, complaining that Art Intermedia and its artist had been excluded from the Kolner Kunstmarkt events - the letter is signed in facsimile by H.P. Alvermann, Joseph Beuys, Helmust Rywelski and Wolf Vostell. Sadly the publication has been stored in a ring binder at some point and there are punched holes on the left. Minor handling creases. An important document.