Grennan and Sperandio were commissioned to make new work for the international contemporary art survey Traffic, curated by Nicolas Bourriaud, and their works have often been exhibited with other "Relational Art" practitioners, such as Rirkrit Tiravanija and Maurizio Cattelan.
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Grennan and Sperandio have produced 18 comic books for museums with Fantagraphics Books, DC Comics and under their own imprint Kartoon Kings.
Christopher Columbus | Christopher Walken | Christopher Lee | Christopher Wren | Christopher Plummer | Christopher Reeve | Christopher Lloyd | Christopher Lambert | Christopher Kasparek | Christopher Hogwood | Christopher Marlowe | Christopher Hitchens | Christopher Guest | Christopher | Christopher Tolkien | Christopher Isherwood | John Christopher | Christopher Fry | Christopher Alexander | Christopher Kane | Christopher Hatton | Christopher Banks | Dennis Christopher | Christopher Wordsworth | Christopher Larkin | Christopher Cockerell | Christopher C. Kraft Jr. Mission Control Center | George Christopher | Christopher Wheeldon | Christopher Nolan |