Small portrait of German naturalist and explorer Alexander von Humboldt, done by English/American engraver John Sartain (1808-1897), after original portrait done by painter Ferdinand Theodor Hildebrandt (1804-1874).
Autograph note in French, signed by Humboldt, 20 Nov 1814, addressee unknown, but recommending the bearer, an "American" mineralogist/geologist, M. de Palacios [?].
Creation Nov. 20, 1814
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