
Strowger automatic telephone, 1901-1910
1901-1910
1901-1910
1905
1934
1935
circa 1910
1903
1918
1936
1903
1935
1918-1920
1919
1920-1930
1909-1910
circa 1919
1901-1930
1907
1901-1930
1915-1918
1920-1925
1914-1918
1901-1930
after 1903
1936
1921-1930
1911
1839 (original); circa 1988 (replica)
1913
1925-1935
1915-1925
1915-1918
1936
1907
1909
1926
1904
1938
1920
1910
1938
1938
1910-1920
1935
1938
1901
1928
1914-1920
1914-1918
1936
1920-1929