Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] (1906)
United States. Bureau of the Census, Steuart, William Mott, 1861-, Martin, Thomas Commerford, 1856-1924, Abbott, Arthur Vaughan, 1854-, Mayer, William · Washington : Govt. Print. Off. · leaf 172
ervices and were reportedin combination therewith. That the services are already of some magnitude isindicated by the fact that the 55 systems included in thistable show a total of 84 salaried officials and clerks,with total salaries of $139,477 per annum, and 818 wage-earners, with total wages of… … 1, Automatic repeater: l, automatic line tester; 3, multiple pen register; 4, manual dial transmitter.
Telephone · Telegraph · Fire alarms
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