The life and letters of Barthold George Niebuhr : with essays on his character and influence
Niebuhr, Barthold Georg, 1776-1831; Bunsen, Christian Karl Josias, Freiherr von, 1791-1860; Brandis, Johannes, 1830-1873; Loebell, Johann Wilhelm, 1786-1863; Hensler, Dora Behrens