Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 752
ade. Portabletracks these arecalled, and they in-clude switches, turn-outs, frogs, and complete turn-tables. Usually theyare made in fifteen-foot sections of rails and steelties bolted together as one unit, each of which, ofthe lighter weights, can be handled by two huskymen. The sections are…
Children's literature
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