Portret van Martin Heinrich Klaproth

Portret van Victor Friedrich Gottlieb von Biedersee

Johann Ferdinand Krethlow (mentioned on object), 1817 - 1842

Portret van Stanislaus Leszczyński, koning van Polen

Johann Ferdinand Krethlow (possibly), 1777 - 1842

Portret van Jean Pierre Erman

Johann Ferdinand Krethlow (mentioned on object), 1805

Portret van Sigismund Friedrich Hermbstaedt

Johann Ferdinand Krethlow (mentioned on object), 1797

Portret van Sigismund Friedrich Hermbstaedt

Johann Ferdinand Krethlow (mentioned on object), 1797

Portret van Johann Gottlob Bernstein

Johann Ferdinand Krethlow (mentioned on object), 1777 - 1842