Columbia subject headings:
Extortion--United States.
Group insurance--United States.
International Brotherhood of Teamsters, Chauffeurs, Warehousemen, and Helpers of America.
Labor unions--United States.
Union Casualty and Life Insurance Company.
Harvard subject headings:
Princeton subject headings:
Extortion--United States.
Group insurance--United States.
International Brotherhood of Teamsters, Chauffeurs, Warehousemen, and Helpers of America.
Labor unions--United States.
Union Casualty and Life Insurance Company.