Columbia subject headings:
Adam, Robert, 1728-1792--Exhibitions.
Architectural drawing--England--18th century--Exhibitions.
Architectural drawing--United States--Private collections--Exhibitions.
Headfort House (Ireland)--Exhibitions.
Mellon, Paul, Mrs.--Art collections--Exhibitions.
Mellon, Paul--Art collections--Exhibitions.
Harvard subject headings:
Adam, Robert, 1728-1792
Architecture, Domestic--Ireland--Meath.
Decoration and ornament, Architectural--Ireland--Meath.
Headfort House, (Meath, Ireland)
Historic buildings--Ireland--Meath.
Mellon, Paul--Art collections.
Princeton subject headings: