Columbia subject headings:
Ecumenists--Scotland--Biography.
Oldham, J. H. (Joseph Houldsworth), 1874-1969.
Harvard subject headings:
Ecumenical movement.
Ecumenists--Great Britain--Biography.
Ecumenists--Scotland--Biography.
Oldham, J. H. (Joseph Houldsworth), 1874-1969.
Princeton subject headings: