Figure 1
Wolf Vostell, Poster for 3 Country Happening, Spring, April 27, 1966. Allan Kaprow papers, ca. 1940–1997, Getty Research Institute, Los Angeles, (980063). Wolf Vostell / Artists Rights Society (ARS), New York / VG Bild-Kunst, Bonn.
Figure 2
Marta Minujín, Simultaneidad en Simultaneidad storyboard, October 24, 1966. Marker on paper, 12 x 16 in. Allan Kaprow papers, ca. 1940-1997, Getty Research Institute, Los Angeles (980063).