Columbia subject headings:
Architecture--Ontario--Ottawa--Congresses.
Minorities--Ontario--Ottawa--Congresses.
Ottawa (Ont.)--History--Congresses.
Ottawa (Ont.)--Social conditions--Congresses.
Harvard subject headings:
Architecture--Ontario--Ottawa--Congresses.
Minorities--Ontario--Ottawa--Congresses.
Ottawa (Ont.)--History--Congresses.
Ottawa (Ont.)--Social conditions--Congresses.
Princeton subject headings:
Architecture--Ontario--Ottawa--Congresses.
Minorities--Ontario--Ottawa--Congresses.
Ottawa (Ont.)--History--Congresses.
Ottawa (Ont.)--Social conditions--Congresses.