This paper studies a corpus of documents linked to book censorship at the end of the Old Regime, entrusted by the Council of Castile to the Academy of Fine Arts. The documentation collected tells us about the administrative process, the agents involved (authors, editors, translators) and the specific assessments of the academics who made the reports. This documentation enables us the identification of the formal and content criteria applied to this series of works, following the specifications imposed by a controlling State, prior to its dissemination both to the academic public and to amateurs. [ABSTRACT FROM AUTHOR]