Issue edited by Philip Leider. Essays "An Interview with Jasper Johns," by Walter Hopps; "Frank Stella," by Robert Rosenblum; "Mondrian at Santa Barbara," by John Coplans; "Calder at the Guggenheim," by Wayne V. Andersen; "Four Russian Posters." Reviews by Fidel A. Danieli, Don Factor, Betje Howell, Nancy Marmer, Curt Opliger, Molly Siple, William Wilson, and Margery Mann. Cover: Piet Mondrian.