Describes a composite system having features of interest for interurban lines, and greatly diminishes the likelihood of a total interruption. (2000 w.) (No. 84373)
Combined telegraph and telephone system used by the interurban railway, Des Moines
St Ry Jour
1907
Aufsatz (Zeitschrift)
Englisch
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Freight-handling by the Des Moines interurban railway Co.
Engineering Index Backfile | 1906
A composite telegraph and telephone system for interurban railways
Engineering Index Backfile | 1907
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