Zentralblatt für Innere Medizin
- 15.1894 Michigan = Google
- 15.1894 California = Google (Teil 1) + California = Google (Teil 2)
- 16.1895 Michigan = Google
- 16.1895 California = Google (Teil 1) + California (Teil 2)
- 17.1896 Michigan = Internet Archive
- 18.1897 Michigan = Internet Archive
- 19.1898 Michigan = Internet Archive
- 20.1899 Michigan = Internet Archive
- 21.1900 Michigan = Internet Archive
- 22.1901 Michigan-USA* = Internet Archive
- 23.1902 Michigan-USA* = Internet Archive
- 24.1903 Michigan-USA* = Internet Archive
- 25.1904 Michigan-USA* = Internet Archive
- 26.1905 Michigan-USA* = Internet Archive
- 27.1906 Michigan-USA* = Internet Archive
- 28.1907 Michigan-USA* = Internet Archive
- 29.1908 Michigan-USA* = Internet Archive
- 30.1909 Michigan-USA* = Internet Archive
- 31.1910, H. 1-26 Minnesota-USA* = Internet Archive
- 31.1910, H. 27-52 Minnesota-USA* = Internet Archive
- 32.1911 [fehlt Hilf mit!]
- 33.1912 Michigan-USA* = Internet Archive
- 34.1913, H. 1-26 Minnesota-USA* = Internet Archive
- 34.1913, H. 27-52 Minnesota-USA* = Internet Archive
- 35.1914 California-USA* = Internet Archive
- 36.1915 California-USA* = Internet Archive
- 37.1916 California-USA* = Internet Archive
- 38.1917 California-USA* = Internet Archive
- 39.1918 California-USA* = Internet Archive
- 40.1919 California-USA* = Internet Archive
- 41.1920 California-USA* = Internet Archive
- 42.1921 California-USA* = Internet Archive
- 43.1922 California-USA* = Internet Archive
- 44.1923 California-USA* = Internet Archive
- 45.1924 California-USA* = Internet Archive
- 46.1925 California-USA* = Internet Archive
- bis 62.1941 digitalisiert unter Michigan, California, Minnesota (Öffnung erfolgt 2022 bis 2037)