Los Invencibles del Siglo XX Anuario

A single, oversized 1969 annual from Editora de Periódicos, S. C. L. "La Prensa," Los Invencibles del Siglo XX Anuario collects the adventures of a masked, muscle-bound hero and his allies in a standalone comic special. Published as a year-end compilation, it offers a dense, self-contained slice of Mexican adventure comics from the late 1960s. Though brief, this one-shot annual captures a specific moment in the publisher's long-running line of Invencibles material.