This book documents the happening 24 Stunden (24 hours) that began at midnight on June 5, 1965 at the Galerie Parnass in Wuppertal. The participants included Joseph Beuys, Bazon Brock, Rolf Jahrling, Ute Klophaus, Charlotte Moorman, Nam June Paik, Eckart Rahn, Tomas Schmit, and Wolf Vostell. Throughout this midnight-to-midnight performance, each artist engaged in a signature action - Beuys interacted with a wedge of fat, Vostell stabbed pieces of raw meat, and Brock performed one of his hallmark headstands. The book includes many documentary photographs by Ute Klophaus, with three double-sided fold-out plates (six panels each), and Vostell’s flour sealed in a plastic pouch located in a die-cut compartment in the back of the book. — Reference: Thomas Kellein / Archiv Sohm; ‘Printed Matter. Künstlerbücher aus der Sammlung Missmahl’, pp. 22-23.