German series in Die Gartenlaube, 1872

German article in Die Gartenlaube, 1872, no. 52

German article in Die Gartenlaube, 1872, no. 44

German article in Die Gartenlaube, 1873, no. 4

German article in Die Gartenlaube, 1872, no. 46

German article in Die Gartenlaube, 1875, no. 46

German article in Die Gartenlaube, 1876, no. 19

German article in Die Gartenlaube, 1861, no. 6

German article in Die Gartenlaube, 1896, no. 9

German article in Die Gartenlaube, 1878, no. 6

scientific work by Ludwig Büchner

German article in Die Gartenlaube, 1877, no. 17

London :Freethought pub. co.,1880. | University of California Libraries (archive.org)

German article in Die Gartenlaube, 1893, no. 40

German article in Die Gartenlaube, 1860, no. 34

German article in Die Gartenlaube, 1869, no. 44