Columbia subject headings:
Arbitration, Industrial--United States.
Railroads--Canada--Employees.
Railroads--Great Britain--Employees.
Railroads--United States--Employees.
Harvard subject headings:
Arbitration, Industrial--United States
Railroads--Canada--Employees.
Railroads--Great Britain--Employees
Railroads--United States--Employees
Princeton subject headings:
Arbitration, Industrial--United States.
Railroads--Canada--Employees.
Railroads--Great Britain--Employees.
Railroads--United States--Employees.