Columbia subject headings:
Courthouses--Pennsylvania--Allegheny County.
Harvard subject headings:
Allegheny County Courthouse and Jail (Pittsburgh, Pa.)
Architecture, Modern--19th century--Pennsylvania--Pittsburgh.
Courthouses--Pennsylvania--Allegheny County.
Courthouses--Pennsylvania--Pittsburgh.
Jails--Pennsylvania--Pittsburgh.
Pittsburgh (Pa.)--Buildings, structures, etc.
Richardson, H. H. (Henry Hobson), 1838-1886.
Romanesque revival (Architecture)--Pennsylvania--Pittsburgh.
Princeton subject headings:
Courthouses--Pennsylvania--Allegheny County.