Serial issues, pamphlets, leaflets, flyers, internal bulletins, and conference proceedings, issued by Spanish socialist, communist,
anarchist, Trotskyist, Maoist and trade-union organizations, and by Catalan and Basque nationalist organizations, relating
to conditions in Spain under the regime of Generalissimo Francisco Franco, to prospects for its downfall, and to conditions
in the immediate post-Franco period. Most issuances were published or distributed clandestinely.