
Model of Leeuwenhoek's microscope
1901-1930
1901-1930
1918
circa 1900
1934
1935
1926-1932
1915-1918
1920-1925
1918-1920
1919
1901-1910
1912
1900-1910
1923
1903
1907
1925-1935
1915-1925
c.1912
1909-1910
1830 (original); 1967 (model)
1910-1926
1915
1914
1926
1904
1935
1901
1928
circa 1910
1914-1920
1935
circa 1900
1914-1918
1920-1929
1934
1910
1922
1900
1935
1903
1901-1930
1907-1920
1913-1923
1900
c.1912
1910
1904-1914
1934
1901