Columbia subject headings:
Churchill, Winston, 1874-1965.
Intelligence officers--Great Britain--Biography.
Menzies, Stewart Graham, Sir, 1890-1968.
World War, 1939-1945--Secret service--Great Britain.
Harvard subject headings:
Churchill, Winston, 1874-1965
Churchill, Winston, 1874-1965--Military leadership.
Intelligence officers--Great Britain--Biography.
Menzies, Stewart Graham, Sir, 1890-1968.
World War, 1939-1945--Secret service--Great Britain.
Princeton subject headings:
Churchill, Winston, 1874-1965.
Intelligence officers--Great Britain--Biography.
Menzies, Stewart Graham, Sir, 1890-1968.
World War, 1939-1945--Secret service--Great Britain.