Johannes, de Rupescissa, approximately 1300-approximately 1365. Liber lucis.; Albertus, Magnus, Saint, 1193?-1280. De mineralibus. Selections.; Arnaldus, de Villanova, -1311.; Lea, Henry Charles, 1825-1909, former owner.; Llull, Ramon, 1232?-1316, attributed name.; Heber, Richard, 1773-1833, former owner.; Kloss, Georg Franz Burkhard, 1787-1854, former owner.; Strong, George Templeton, 1820-1875, former owner.; Geber, active 13th century.