Jose Gudalupe Posada: Creator of La Catrina - José Guadalupe Posada, an ingenious artist, lived during one of the most turbulent times in Mexico. He knew how to capture the essence of this turbulence in his lithographs to the point that they became the icon of Revolutionary Mexico.
Wikipedia: José Guadalupe Posada - Article about José Guadalupe Posada a Mexican engraver and illustrator. Posada's best known works are his calaveras, or skeletons, which often assume various costumes, such as the Calavera de la Catrina, the "Skeleton of the Female Dandy".