Letter from Adolf von Buch to Louis de Beausobre (Magdeburg, 15 January 1761). Ed. by Anne Baillot. Prepared by Anne Baillot, Marion Siéfert. In: "Letters and texts: Intellectual Berlin around 1800". Ed. by Anne Baillot. Berlin: Humboldt-Universität zu Berlin. http://www.berliner-intellektuelle.eu/manuscript?Brief03vonBuchanBeausobre. Last modified: 23 August 2014.