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Description
1) Two letters to W. W. Hanscom from the Direct-Line Telephone Company and the Dictograph Products Corporation, dated September and October 1923, providing equipment and installation quotes for automatic telephone systems for the Felton Water Wheel Co. 2) "The Dictograph System of Interior Telephones" product brochure, Dictograph Products Corporation, 1923. 3) "The Detective Dictorgraph" brochure, "Hears even a Whisper" (1507.76J)
Type
image
Identifier
73DED55F-D2C6-4A52-BD08-679954025661 2003-33-1756
Subject
Telephone, Automatic (LCSH) Telephone systems (LCSH) Telephone switchboards (LCSH) Dictograph Products Corporation Felton Water Wheel Company (San Francisco, Calif.) Intercommunication systems Direct-Line Telephone Company (San Francisco, Calif.)
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