
Strowger automatic telephone, 1901-1910
1901-1910
1901-1910
1905
1897
circa 1910
1903
1903
About 1890
1909-1910
1897-1898
1907
1895-1904
after 1903
1895
circa 1897
1890
1911
1897
circa 1900
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1913
1893
1907
1909
1904
1910
1901
circa 1900
1910
1900
1899
1905
1890
1914
1895
1896
1901
1900
1915
1910
1910
1915
1896
1906
1915
1893-4
1934
1902-1907
1896
1890-1910