Twentieth century manual of railway and commercial telegraphy (1905)
Meyer, Frederic Louis, b. 1875 · Chicago, New York, Rand, McNally & Company · leaf 123
Locomotive running forward by night carrying signal for Train Following.1 — Signal for Train Following.2—Markers. … L i = ^1 P. I & M <u I £-> PART V. LESSON I. ^^31 Train Orders. When an operator receives 31 lie must imme-diately display RED and hold his order boardagainst all trains until the object for which it is outis accomplished. Write all copies of your orders at once. Toenable you to do this…
Telegraph
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