American Painting Now, curated by Alan Solomon, was shown in the American Pavilion at Expo ’67 (the 1967 International and Universal Exposition) in Montreal. The pavilion, an enormous glass geodesic dome designed by the architect Buckminster Fuller, accommodated works of unprecedented scale. The ten canvases of Indiana’s The Cardinal Numbers (1966) were hung in a vertical column 50 feet high, descending from Zero, Nine, Eight . . . to One. Other artists in the exhibition included Helen Frankenthaler, Jasper Johns, Robert Motherwell, Barnett Newman, James Rosenquist, Frank Stella, Andy Warhol, and Tom Wesselmann. The show subsequently traveled to the Horticultural Hall in Boston, December 15, 1967–January 10, 1968, where The Cardinal Numbers were installed horizontally.