Pan Am World Clipper Cargo Around The Clock Around The WorldOriginal vintage advertising poster for Pan American airlines clipper service Around the Clock Around the World Passengers Mail Clipper Cargo. Great artwork by the notable graphic designer Edward McKnight Kauffer (1890 1954) featuring a cargo plane flying above small white clouds against a blue night sky with a bright image of the globe in shades of yellow and orange in the centre showing the routes served by PanAm set as a swinging clock pendulum