Columbia subject headings:
Boulay family--Correspondence.
Great Britain--History--Edward VII, 1901-1910.
Great Britain--History--George V, 1910-1936.
Great Britain--History--Victoria, 1837-1901.
Harvard subject headings:
Boulay family--Correspondence.
Great Britain--History--Edward VII, 1901-1910
Great Britain--History--George V, 1910-1936.
Great Britain--History--Victoria, 1837-1901
Princeton subject headings:
Boulay family--Correspondence.
Great Britain--History--Edward VII, 1901-1910.
Great Britain--History--George V, 1910-1936.
Great Britain--History--Victoria, 1837-1901.