Quatremère made great lexicographic collections in Oriental languages, fragments of which appear in the notes to his various works. His manuscript material for Syriac was utilized in Robert Payne Smith's Thesaurus; of the slips he collected for a projected Arabic, Persian and Turkish lexicon some account is given in the preface to Dozy, Supplément aux dictionnaires arabes. They were acquired by the Munich Court Library in 1858 and are now being held by its successor, the Bavarian State Library.[2][4]