Columbia subject headings:
Northcliffe, Alfred Harmsworth, Viscount, 1865-1922--Congresses.
Press--Great Britain--History--20th century--Congresses.
Harvard subject headings:
Princeton subject headings:
Northcliffe, Alfred Harmsworth, Viscount, 1865-1922--Congresses.
Press--Great Britain--History--20th century--Congresses.