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1930
1932
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1931

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Belgian Bakelite Table Telephone
Belgian Bakelite Table Telephone
Bell Telephone Manufacturing Company
Ericsson DBH 1001
Ericsson DBH 1001
L.M. Ericsson
PDF: American Electric 1931 catalog
American Electric 1931 catalog
PDF: AT&T Annual Report, 1931
AT&T Annual Report, 1931
PDF: Ericsson 1931 catalog
Ericsson 1931 catalog
PDF: Strowger 1931 Dial Telephones catalog
Strowger 1931 Dial Telephones catalog