24. See-saw, by Simone Forti. 1960. Performed by Yvonne Rainer and Robert Morris at Reuben Gallery, New York, 16th–18th December 1960. (Photograph Robert R. McElroy Photographs of Happenings and Early Performance Art; Getty Research Institute, Los Angeles).
Attributed works:
25. The branch, by Anna Halprin. 1957. Performed by A.A. Leath, Anna Halprin ad Simone Forti on the Halprin’s family Dance Deck, Kentfield CA, 1957. Photograph Warner Jepson (Courtesy the Estate of Warner Jepson).