On Champs Elysées in Paris I found this lovely postcard. Below you can find an ASPO interpretation of the postcard.
“Our drawing of the peak and decline of oil production was not a picture of a hat. It was a picture of a boa constrictor (we who use oil) digesting the great oil fields (the elephants). ASPO has tried to explain the inside of the boa so that the grown-ups (politicians) could see it clearly. They always need to have things explained”, Kjell Aleklett.