Columbia subject headings:
Architecture--Missouri--Saint Louis--Exhibitions.
Architecture--Missouri--Saint Louis--History--19th century--Exhibitions.
Buildings--Missouri--Saint Louis--Exhibitions.
Saint Louis (Mo.)--Buildings, structures, etc.--Exhibitions.
Harvard subject headings:
Architecture, Modern--19th century--Missouri--Saint Louis--Exhibitions.
Architecture--Missouri--Saint Louis--Exhibitions.
Architecture--Missouri--Saint Louis--History--19th century--Exhibitions.
Buildings--Missouri--Saint Louis--Exhibitions.
Saint Louis (Mo.)--Buildings, structures, etc.--Exhibitions.
Princeton subject headings:
Architecture, Modern--19th century--Missouri--Saint Louis--Exhibitions.
Architecture--Missouri--Saint Louis--Exhibitions.
Saint Louis (Mo.)--Buildings--Exhibitions.