Columbia subject headings:
Collective labor agreements--Railroads--United States.
Railroad law--United States.
Railroads--United States--Employees.
Railroads--United States--Salaries, pensions, etc.
Harvard subject headings:
Princeton subject headings:
Arbitration agreements, Commercial--United States.
Contracts for work and labor--United States.
Labor laws and legislation--United States.
Railroads--Employees.