Columbia subject headings:
Architecture--Michigan--Douglas--History.
Architecture--Michigan--Saugatuck--History.
Douglas (Mich.)--History.
Saugatuck (Mich.)--History.
Harvard subject headings:
Architecture--Michigan--Douglas--History.
Architecture--Michigan--Saugatuck--History.
Douglas (Mich.)--History.
Saugatuck (Mich.)--History.
Princeton subject headings: