Columbia subject headings:
City planning--Michigan--Detroit.
City planning--Pennsylvania--Pittsburgh.
Detroit (Mich.)--Buildings, structures, etc.
Industrial buildings--Remodeling for other use--Michigan--Detroit.
Industrial buildings--Remodeling for other use--Pennsylvania--Pittsburgh.
Pittsburgh (Pa.)--Buildings, structures, etc.
Urban renewal--Michigan--Detroit.
Urban renewal--Pennsylvania--Pittsburgh.
Harvard subject headings:
Architecture--Conservation and restoration--United States--Michigan--Detroit--Case studies.
Architecture--Conservation and restoration--United States--Pennsylvania--Pittsburgh--Case studies.
Buildings--Remodeling for other use--United States--Michigan--Detroit--Case studies.
Buildings--Remodeling for other use--United States--Pennsylvania--Pittsburgh--Case studies.
Princeton subject headings: