German article in Die Gartenlaube, 1867, no. 25 and 33
German article in Die Gartenlaube, 1872, no. 28
German article in Die Gartenlaube, 1857, no. 30
German article in Die Gartenlaube, 1859, no. 41–43
German article in Die Gartenlaube, 1873, no. 35
German article in Die Gartenlaube, 1857, no. 37, 38, 45, 47