Image: Alexander von humboldt 1807 225-91-1-PB

Description: Alexander von Humboldt, in Berlin 1807, Bleistift und Tusche
Title: Alexander von humboldt 1807 225-91-1-PB
Credit: Bibliothek des Conseil d’État, Paris, Frankreich. Datei von http://www.hin-online.de/index.php/hin/article/viewFile/225/414/91
Author: Frédéric Christophe de Houdetot (1778–1856)
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Usage Terms: Public domain
License: Public domain
Attribution Required?: No