138.
HUMBOLDT TO VARNHAGEN.
POTSDAM, _October 29th, 1849_.
Letters of Alexander von Humboldt to Varnhagen von Ense. From 1827 to 1858. With extracts from Varnhagen's diaries, and letters of Varnhagen and others to Humboldt · 第 138 / 252 题