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Official Explorations for Pacific Railroads

George Leslie Albright

出版	University of California Press, 1921
URL	http://books.google.com.hk/books?id=S4RTQkaVqw0C&hl=&source=gbs_api

註釋

Congress and business desired transcontinental routes to the Pacific coast to facilitate access to the opulent commerce of the Far East. Albright described the three main routes: extreme north, central, and extreme south and their explorers.