1970s illustration

I went to the library and read a book about illustration in the 1970a. I stole these images. A lot of them are by Philippe Corentin or Alain le Saux - I can't really find much information about them on the internet, but I really like these pictures.

I'd like to develop that skill of thinking up smart, metaphorical imagery that brutally communicates an idea, in such a poetic way.