This is about forty years old, and I remember seeing it when I was a kid. My dad drew it in a lunch break; he was a printer at the time, and working at a company in London that printed food packaging, and this was drawn on an old bit of cardboard he picked up off the floor. All he had at the time was a blue ballpoint pen and a pencil.
Apparently he was inspired by a picture in a newspaper that someone had left on the canteen table.
