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1922
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1930s
1940s
1950s
1960s
1970s
1980s
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WE 20AL Candlestick
1904–1927
AE 21 Candlestick
1922–1935
AE 21 Wall Phone
1922–1935
WE 50AL Candlestick
1919–1928
40B Railroad Phone
1919–1930
AE Step Base Candlestick
1911–1925
Kellogg Dial Grabaphone
c. 1922
Type C carrier system deployed
1922
Network
📄 Open PDF
1922: Railroad Telephone And Selective Apparatus
PDF
