Columbia subject headings:
Businesspeople--Switzerland--Biography.
Churchill, Winston, 1874-1965--Friends and associates.
Friendship--History--20th century.
Painting, Modern--20th century.
Prime ministers--Great Britain--Biography.
Sax, Willy--Friends and associates.
Harvard subject headings:
Businesspeople--Switzerland--Biography.
Churchill, Winston, 1874-1965--Friends and associates.
Friendship--History--20th century.
Painting--20th century.
Prime ministers--Great Britain--Biography.
Sax, Willy--Friends and associates.
Princeton subject headings:
Churchill, Winston, 1874-1965--Knowledge--Painting.
Industrialists--Switzerland--Biography.
Paint industry and trade--Switzerland--Biography.
Sax, Willy, 1898-1964.