Northern Pacific Railroad Company & Rand McNally and Company. (1879). Map of the Northern Pacific Railroad and connections. Northern Pacific Railroad.
Cita Chicago Style (17a ed.)Northern Pacific Railroad Company y Rand McNally and Company. Map of the Northern Pacific Railroad and Connections. [St. Paul, Minn.]: Northern Pacific Railroad, 1879.
Cita MLA (8a ed.)Northern Pacific Railroad Company y Rand McNally and Company. Map of the Northern Pacific Railroad and Connections. Northern Pacific Railroad, 1879.
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