Columbia subject headings:
Employers' liability insurance--United States.
Employers' liability--Congresses.
Employers' liability--United States.
Industrial accidents.
Harvard subject headings:
Accident insurance.
Employers' liability--Congresses.
Employers' liability--United States.
Labor--Accidents.
Working class--Accidents.
Princeton subject headings:
Accident insurance.
Employers' liability--Congresses.
Employers' liability--United States.
Industrial accidents--Congresses.