Northern Pacific Railway Company. Land Department. (1872). Settlers' guide to Oregon and Washington Territory, and to the lands of the Northern Pacific Railroad on the Pacific slopes.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNorthern Pacific Railway Company. Land Department. Settlers' Guide to Oregon and Washington Territory, and to the Lands of the Northern Pacific Railroad on the Pacific Slopes. New York, 1872.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNorthern Pacific Railway Company. Land Department. Settlers' Guide to Oregon and Washington Territory, and to the Lands of the Northern Pacific Railroad on the Pacific Slopes. 1872.
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