'Relatos de Presidio', #384 (12 March 2002).
Oscar Bazaldúa Nava has been working in Mexican comics since the 1980s. He studied for a year and a half at a commercial art school, but had to quit when the school collapsed in the 1985 earthquake. He then assisted Sixto Valencia on the libretto 'La Serpiente Desplumada' for a couple of years. He is a regular artist on so-called Ghetto Librettos of the publishing houses Toukán and Mango (cheap pulp comic books full of sex and violence, such as Almas Perversas and Relatos de Presidio).
'Almas Perversas', #37 (29 August 1997).