German article in Die Gartenlaube, 1872, no. 39

German article in Die Gartenlaube, 1873, no. 12

German article in Die Gartenlaube, 1872, no. 46

German article in Die Gartenlaube, 1873, no. 19–20

German article in Die Gartenlaube, 1872, no. 11

German article in Die Gartenlaube, 1870, no. 52

German article in Die Gartenlaube, 1873, no. 50

German article in Die Gartenlaube, 1872, no. 51

German article in Die Gartenlaube, 1873, no. 4, 5

German article in Die Gartenlaube, 1873, no. 46–47