Portal to Another Dimension (Deborah)/Negative, Portal to Another Dimension (Deborah)/Positive By Solomon R. Guggenheim Museum $0 Kodak By Solomon R. Guggenheim Museum $0 Merce Cunningham performs STILLNESS (in three movements) to John Cage's composition 4'33" with Trevor Carlson, New York City, 28 April 2007 (six performances; six films) By Solomon R. Guggenheim Museum $0