Catalan-language publishers were under constant threat during the dictatorship of Francisco Franco (1939-1975). Both the Catalan language and the introduction of foreign ideas were banned by the regime, preoccupied as it was with creating a "one, great and free Spain." Books against Tyranny examines the period through its censorship laws and censors' accounts by means of intertextuality, an approach that aims to shed light on the evolution of Francoism's ideological thought. The documents examined here includes firsthand witness accounts, correspondence, memoirs, censorship files, newspapers, original interviews, and unpublished material housed in various Spanish archives. As such, the book opens up the field and serves as an informative tool for scholars of Franco's Spain, Catalan social movements, or censorship more generally.