Columbia subject headings:
Prisoners--Legal status, laws, etc.--Great Britain.
Prisoners--Legal status, laws, etc.--United States.
Harvard subject headings:
Prisoners--Legal status, laws, etc.--Great Britain.
Prisoners--Legal status, laws, etc.--United States
Princeton subject headings:
Prisoners--Legal status, laws, etc.--Great Britain.
Prisoners--Legal status, laws, etc.--United States.