Robuta

https://wellcomecollection.org/works/u8g399hu Friedrich Heinrich Alexander von Humboldt. Lithograph by Ducarme after Baron C. von Steuben, 1815.... Friedrich Heinrich Alexander von Humboldt. Lithograph by Ducarme after Baron C. von Steuben, 1815. friedrich heinrich alexander https://wellcomecollection.org/works/gebyc7mn Friedrich Heinrich Alexander von Humboldt. Stipple engraving by A. Tardieu, 1823, after himself. |... Friedrich Heinrich Alexander von Humboldt. Stipple engraving by A. Tardieu, 1823, after himself. friedrich heinrich alexander https://wellcomecollection.org/works/nxvgcx8g/items Friedrich Heinrich Alexander von Humboldt. Lithograph, 1824, after Baron C. von Steuben, 1815. |... friedrich heinrich alexander von humboldt