Brief [an Jacob Bernays]
Bonn, 29.08.1864 [29 August 1864]Brief an [Jacob] Bernays
Bonn, 20.12.1853 [20/12 [18]53]Brief an [Jacob] Bernays
Aachen, 15.03.1863 [15 März [18]63]Brief an College und Freund [Jacob Bernays]
[o.O.], 08.01.1861 [8 Januar [18]61]Brief an Freund [Jacob Bernays]
Bonn, 29.11.1856 [29/11 [18]56]Brief an Freund [Jacob Bernays]
Bonn, 03.04.1854 [3/4 [18]54]Brief an Freund [Jacob Bernays]
Bonn, 17.12.1859 [17 Dec. [18]59]Brief an Freund [Jacob Bernays]
Bonn, 24.10.1860 [24 Octob 1860]Brief an Freund [Jacob Bernays]
Bonn, 22.01.1862 [22 Jan. [18]62]Brief an Freund [Jacob Bernays]
Bonn, 20.08.1862 [20 August [18]62]Brief an Freund [Jacob Bernays]
Bonn, 21.11.1862 [21 Novemb. [18]62]