documenta 5, catalogue, 'Interrogation of Reality', Kassel, 1972.

documenta 5, catalogue, 'Interrogation of Reality', Kassel, 1972. Catalog for documenta 5 from June 30 to October 8, 1972 in Kassel under the title 'Befrageung der Reality', published by documenta GmbH and the Bertelsmann GmbH publishing group with a circulation of 20,000, around 500 pages, 'list of the works on display, of the situations presented, the expected events, their nature, their producers and owners, their organizers', stored in an orange-red plastic ring binder with an ant print designed by Ed Ruscha, L.32cm, W.27cm, D.7.5cm.