3181. Free Library of Philadelphia, Lewis T179 Title: Tractatus de causis Place: undetermined Date: 1000-1500
3182. Free Library of Philadelphia, Lewis T180 Title: Scholastic philosophical treatise Place: undetermined Date: 1000-1500
3189. Free Library of Philadelphia, Lewis T187 Title: De contemptu mundi Place: undetermined Date: 1000-1500
3190. Free Library of Philadelphia, Lewis T188 Title: De remediis utriusque fortunae Place: undetermined Date: 1000-1500