German article in Die Gartenlaube, 1870, no. 38

German article in Die Gartenlaube, 1863, no. 12

German article in Die Gartenlaube, 1866, no. 27

German article in Die Gartenlaube, 1873, no. 48

German article in Die Gartenlaube, 1872, no. 23

painting by Robert Heck

German article in Die Gartenlaube, 1866, no. 51

German article in Die Gartenlaube, 1870, no. 40

German article in Die Gartenlaube, 1870, no. 44

German article in Die Gartenlaube, 1887, no. 34