Columbia subject headings:
Espionage--Great Britain--History--20th century.
Great Britain. MI5--History.
Great Britain. MI6--History.
Intelligence officers--Great Britain--Biography.
Spies--Great Britain--History--20th century.
White, Dick, Sir, 1906-1993.
Harvard subject headings:
Espionage--Great Britain--History--20th century.
Great Britain. MI5--History.
Great Britain. MI5--Officials and employees.
Great Britain. MI6--History.
Intelligence officers--Great Britain--Biography.
Spies--Great Britain--History--20th century.
White, Dick, Sir, 1906-1993.
White, Dick, Sir.
Princeton subject headings:
Espionage--Great Britain--History--20th century.
Great Britain. MI5--Officials and employees.
White, Dick, Sir, 1906-1993.