Twentieth century manual of railway and commercial telegraphy (1905)
Meyer, Frederic Louis, b. 1875 · Chicago, New York, Rand, McNally & Company · leaf 242
e used in event of aninterruption of the circuit, first to notify chief ortesting operator, and second, to move old business=Always try both sides when testing with groundwire, and if you do not get a circuit either way,look around your own office for trouble, as it is acase generally of a broken… … 240 THE TWENTIETH CENTURY II1! rH(MC0Tt^i0Olr-G00iO^C<IC0TtHi0Ot^Qf0a5O T-i(MCOTt^»OC01>OOCiOrHC^COr}HiOCOi>000:>0 T-l(Mco^>oco^:^GoaiO-|(^^cort^locD^^ooaiO T-i(MCOTtliOOI>OOOiO-H(MCO^LO<:DJ:^OOCiO ^(MCC^iOCOt-OCCiO^fMCO^iOCOt^GOCiO ^CMCO^iOCOt-GOCiO^(NCO^iOC01>0000…
Telegraph
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