Autograph letter signed ("A Humboldt").
Paris, 1821.
Small 8vo. 1½ pp. on bifolium. Addressed by Humboldt on another side, and with "M. de Humboldt".
€ 1.800,00
In French, to a Paris bookseller, ordering several volumes.
Folded, with remnants of a wax seal and corresponding abrasion where unsealed; few marks.