Columbia subject headings:
Railroad law--United States.
Railroads--Taxation--United States.
Railroads--United States--Rates.
Harvard subject headings:
Railroad law--United States.
Railroads--Freight--Rates--United States
Railroads--Taxation--United States
Princeton subject headings:
Railroad law--United States.
Railroads--Freight--Rates--United States.
Railroads--Taxation--United States.