3) Name atleast three titles of the books that the proprietor read to the narrator. What were the themes that the narraotors chose to read? How are these realted to the mental state and health of the proprietor's?

From the text:

We pored together over such works as the Ververt et Chartreuse of Gresset; the Belphegor of Machiavelli; the Heaven and Hell of Swedenborg; the Subterranean Voyage of Nicholas Klimm by Holberg; the Chiromancy of Robert Flud, of Jean D'Indagine, and of De la Chambre; the Journey into the Blue Distance of Tieck; and the City of the Sun of Campanella. One favourite volume was a small octavo edition of the Directorium Inquisitorum, by the Dominican Eymeric de Gironne; and there were passages in Pomponius Mela, about the old African Satyrs and AEgipans, over which Usher would sit dreaming for hours.

These books were each based upon illusions and fantasy..... much the same as Roderick's mental state.