Los doce trabajos de Hercules - Illustrated by Miguel Calatayud c1973
Miguel Calatayud is a Spanish illustrator and is best known for his work in the world of comics. I dug up a couple of his books, both of which were published in the 70s by Editorial Doncel as part of their Trinca collection. If your a fan of the early work by Push Pin Studios and the bold styling of Peter Max, I think you will really dig Miguel.
Peter Petrake c1970
Also worth checking: Peter Max
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