Transportation rules :
Northern Pacific system of railroads : in effect Sept. 1883.

APA Citation

Northern Pacific Railroad Company. (1883). Transportation rules: Northern Pacific system of railroads : in effect Sept. 1883. [St. Paul, Minn.: Northern Pacific Railroad Company].

MLA Citation

Northern Pacific Railroad Company. Transportation Rules: Northern Pacific System of Railroads : In Effect Sept. 1883. [St. Paul, Minn.: Northern Pacific Railroad Company], 1883.

Warning: These citations may not always be complete (especially for serials).