Kwei-lin e-mailed these two images from her collection. The top one is a newspaper from the 1950s; the bottom is by Manuel Perez Coronado, 1974. Both pieces were clearly inspired by the great graphic artist, Jose Guadalupe Posada (1852-1913), who illustrated everyday life in Mexico, politics, religion and the struggles of the poor. He is best known for the skeletal figures that cavort throughout his drawings--funny and morbid at the same time.
I got the Calaveras Refrescadas newspaper, cover artist unknown, probably late 1950s. Lots of other pictures and poems in the paper.
I have a couple skeleton drawings by Manuel Perez Coronado.
And I got one newspaper by the Taller de Grafica Popular. Stanford University did an exhibit 2002 about the relationship of the artist Posada and the Graphics collective, which started in about 1937 and apparently still continues today.