von Humboldt, Alexander (1769-1859) Autograph Note Signed, and Other Material. Undated note in German with Humboldt's signature at the bottom, a small unsigned carte-de-visite with a portrait of Humboldt, and a receipt in French with an old unverified attribution to Humboldt. (3)
von Humboldt, Alexander (1769-1859) Autograph Note Signed, and Other Material. Undated note in German with Humboldt's signature at the bottom, a small unsigned carte-de-visite with a portrait of Humboldt, and a receipt in French with an old unverified attribution to Humboldt. (3)
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