Columbia subject headings:
Executory interests--Great Britain.
Executory interests--United States.
Real property--Great Britain--Cases.
Real property--United States--Cases.
Restraints on alienation--Great Britain.
Restraints on alienation--United States.
Harvard subject headings:
Executory interests--United States--Cases.
Future interests--United States--Cases.
Future interests--United States.
Real property--United States--Cases.
Restraints on alienation--United States.
Princeton subject headings: