Telephony, a Manual of the Design, Construction, and Operation of Telephone Exchanges; Volume p.4
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The Michigan Bell, Volume 2, Issue 5
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Telephones and Telegraphs : 1902: And Municipal Electric Fire Alarm and Police Patrol Systems
United States Bureau of the Census
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Maver's Wireless Telegraphy : Theory and Practice
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Motion Picture Projection : An Elementary Text-Book
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The Bell System Technical Journal; Volume 1
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The Bell System Technical Journal; Volume 27
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