José Guadalupe Posada
"...[E]minent Mexican printmaker José Guadalupe Posada (1852-1913) helped popularize the calavera [skull] as a satirical graphic motif featuring skeletal figures often printed together with a ballad or corrido. His work, which has come to be closely identified with the Day of the Dead, continues to be celebrated around the holiday, particularly in Aguascalientes, his hometown."
Lindberg, M. (2017, November 1). Breathing Life into the Day of the Dead: The Calaveras of José Guadalupe Posada | Picture This: Library of Congress Prints & Photos [Webpage]. //blogs.loc.gov/picturethis/2017/11/breathing-life-into-the-day-of-the-dead-the-calaveras-of-jos-guadalupe-posada/
Guadalupe Posada, J. (1910). Calaveras del montón, número 1 [paper]. Library of Congress, Washington, D.C., USA. https://www.loc.gov/pictures/item/99615942/