Columbia subject headings:
Architecture--Illinois--Chicago.
Public buildings--Illinois--Chicago.
Harvard subject headings:
Architecture--Illinois--Chicago--Guidebooks
Chicago (Ill.)--Buildings, structures, etc.--Guidebooks.
Public buildings--Illinois--Chicago--Guidebooks.
Princeton subject headings:
Architecture--Illinois--Chicago--Guidebooks.
Chicago (Ill.)--Buildings, structures, etc.--Guidebooks.
Guidebooks.
Public buildings--Illinois--Chicago--Guidebooks.