Columbia subject headings:
Equality--Economic aspects--Great Britain--History.
Equality--Economic aspects--United States--History.
Equality--Great Britain--History.
Equality--United States--History.
Harvard subject headings:
Equality--Economic aspects--United States--History.
Princeton subject headings:
Equality--Economic aspects--Great Britain--History.
Equality--Economic aspects--United States--History.
Equality--Great Britain--History.
Equality--United States--History.