These manuscripts constitute one of the most valuable and rarest manuscripts preserved in the Portugal’s National Academy (GCSE Lisbon Academy of Sciences). Most of these manuscripts are written in Arabic and Portuguese.
The manuscripts included the journey of Ibn Battuta, the Arabic lexicon of Jacobus Julius, known as Jules, a Dutch orientalist from the seventeenth century, the Beginning of the World Creation by Muhammad bin Abdullah al-Kisa’I, 30 Arabic books in medicine and philosophy as well as a group of correspondences in Portuguese.