Leon Polk Smith Max Bill particularly liked the work of the American hard-edge painter Leon Polk Smith and he featured one of his paintings36 in the 1960 survey show Concrete Art—50 Years of Development in Zurich, which he curated.
Roy Lichtenstein and Andy Warhol Bill first met Roy Lichtenstein in Zurich on June 15, 1965, at the opening of the exhibition Pop Art, featuring the art of John Chamberlain, Jim Dine, Roy Lichtenstein, Claes Oldenburg, Robert Rauschenberg, James Rosenquist, Andy Warhol, and Tom Wesselmann, at Bruno Bischofberger’s City-Galerie on Pelikanstrasse. Bill would eventually acquire two lithographs by Lichtenstein, a Crying Girl and one of the Haystacks. Thirteen years after the Pop Art exhibition at Bischofberger’s gallery, Warhol had a solo exhibition at the Kunsthaus Zürich in 1978, when he met Bill and subsequently portrayed him on canvas. As with Josef Albers in the 1950s, Bill also swapped one of his works with Warhol.
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