
Strowger automatic telephone, 1901-1910
1901-1910
1901-1910
1905
1897
circa 1910
1903
1918
1903
1909-1910
1897-1898
1907
after 1903
circa 1897
1915-1918
1914-1918
1911
1897
circa 1900
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1915-1918
1907
1913
1909
1904
1901
circa 1900
1910
1900
1899
1905
1914
1896
1915-1917
1901
1900
1915
1910
1917
1910
1915
1896
1906
1915
1934
1902-1907
1896
1913
1898-1908
1914-1918
1910