Columbia subject headings:
Architecture--Middle West--History--19th century--Exhibitions.
Architecture--Middle West--History--20th century--Exhibitions.
Prairie school (Architecture)--Iowa--Exhibitions.
Prairie school (Architecture)--Minnesota--Exhibitions.
Prairie school (Architecture)--Wisconsin--Exhibitions.
Harvard subject headings:
Architecture, Modern--19th century--Middle West--Exhibitions.
Architecture--Middle West--History--19th century--Exhibitions.
Prairie school (Architecture)
Prairie school (Architecture)--Iowa--Exhibitions.
Prairie school (Architecture)--Minnesota--Exhibitions.
Prairie school (Architecture)--Wisconsin--Exhibitions.
Princeton subject headings:
Architecture--Middle West--19th century--Exhibitions.
Prairie school (Architecture)--Iowa--Exhibitions.
Prairie school (Architecture)--Minnesota--Exhibitions.
Prairie school (Architecture)--Wisconsin--Exhibitions.