Derby, E. H. (1869). The overland route to the Pacific: A report on the condition, capacity and resources of the Union Pacific and Central Pacific railways. Lee & Shepard.
Dyfyniad Arddull ChicagoDerby, E. H. The Overland Route to the Pacific: A Report on the Condition, Capacity and Resources of the Union Pacific and Central Pacific Railways. Boston: Lee & Shepard, 1869.
Dyfyniad MLADerby, E. H. The Overland Route to the Pacific: A Report on the Condition, Capacity and Resources of the Union Pacific and Central Pacific Railways. Lee & Shepard, 1869.
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