
Strowger automatic telephone, 1901-1910
1901-1910
1901-1910
1905
1934
1935
circa 1910
1903
1918
1903
1936
1935
1918-1920
1919
1920-1930
1909-1910
1901-1930
1907
circa 1919
after 1903
1915-1918
1920-1925
1914-1918
1901-1930
1936
1921-1930
1911
1901-1930
1913
1839 (original); circa 1988 (replica)
1915-1918
1925-1935
1915-1925
1936
1907
1909
1926
1904
1901
1914-1920
1920-1929
1934
1910
1938
1938
1905
1914
1935
1907-1920
1913-1923
1930
1915