Mexican 1960s political and anti-establishment artwork

with Olympic Games interest, 2 items: Taller de Grafica Popular 1967, with 8pp. dramatic linocut images of Che Guevara, Vietnam, Cuba, hippies in their colony at Oaxaca, and a piece critical of the Olympic Games ("preolimpicas"), due to take place in Mexico in 1968; with a poster (1967) "La Calavera Catrina" (an icon of the Mexican Day of the Dead), approximately 40 x 60cm, with printed text and illustrations to both sides (2)