Columbia subject headings:
Architecture, Domestic.
Architecture, Modern--19th century.
Architecture, Modern--20th century.
Dwellings.
Factories.
Working class--Dwellings.
Harvard subject headings:
Architecture, Modern--19th century
Architecture, Modern--21st century
Dwellings
Factories
Working class--Dwellings
Princeton subject headings:
Architecture, Modern--19th century.
Architecture, Modern--20th century.
Dwellings.
Factories.
Working class--Dwellings.