Columbia subject headings:
Clayton (Museum : Pittsburgh, Pa.)
Frick Art & Historical Center.
Frick Art Museum (Pittsburgh, Pa.)
Frick, Helen Clay, 1888-1984--Homes and haunts--Pennsylvania--Pittsburgh.
Frick, Henry Clay, 1849-1919--Homes and haunts--Pennsylvania--Pittsburgh.
Harvard subject headings:
Clayton (Museum : Pittsburgh, Pa.)
Frick Art & Historical Center
Frick Art & Historical Center--Guidebooks.
Frick Art Museum (Pittsburgh, Pa.)
Frick Art Museum (Pittsburgh, Pa.)--Guidebooks.
Frick family--Homes and haunts--Pennsylvania--Pittsburgh.
Frick, Helen Clay, 1888-1984--Art collections--Guidebooks.
Frick, Helen Clay, 1888-1984--Homes and haunts--Pennsylvania--Pittsburgh.
Frick, Henry Clay, 1849-1919--Homes and haunts--Pennsylvania--Pittsburgh.
Princeton subject headings:
Frick Art & Historical Center.
Frick family.