Philipps, J. Thomas. K.257.6 The history of the two brothers, princes of Saxony, viz. Ernestus the Pious, first duke of Sax-Gotha, and Bernard the Great, duke of Sax-Weimar ... Added genealogical tables of the house of Saxe Gotha. London. 1740. Sm, 8°.
- Bernhard Herzog von Cachsen-Weimar. - Ernst I., der Francine, Herzog von. - Sax-Gotha. - Sax. Col.