The Library of the Real Maestranza is very specialized as regards the basis of its collection, which is dedicated fundamentally to the following subjects: Genealogical and Heraldic Sciences, Equestrian Literature and works dealing with Tauromachy.
The section dedicated to Monarchy, Genealogy, Heraldry and Nobility contains manuscripts (chronicles, annals, memorials, lawsuits over gentility, letters conferring noble titles, etc.) and printed papers (chronicles, guides to the Grandees and Titles of the Kingdom, noble titles, heraldry, registers of inhabitants, catalogues, etc.).
Another of the subjects chosen is Equestrian Literature, especially treatises on riding, bridle techniques and veterinary medicine. As regards the works on bullfighting, of special note are important titles such as the first edition of ‘The Art of Bullfighting’ by Josef Delgado (alias Yllo), the biographies of bullfighters, works on the bullfighting seasons, the histories of bullrings, etc.