After the expulsion of the Jesuits in 1767, their library became a royal school in 1782 during the reign Ferdinand I of the Two Sicilies and the instigation of Gabriele Lancillotto Castello, prince of Torremuza.

[3] The library houses many major collections and collaborations related to local Sicilian history.

Lastly, the library and the students partnered with a Sciascia scholar, Elena Riccio, in order to provide legitimacy to the project.

A major collection housed within the library are materials relating to the Immaculate Conception of the Virgin Mary.

Furthermore, the library also houses editions of the newspaper Giornale di Sicilia going back to the year 1861.