Columbia subject headings:
Architecture--United States--History--19th century.
Mills, Robert, 1781-1855--Criticism and interpretation.
Harvard subject headings:
Architects--United States
Architecture--United States--History--19th century
Mills, Robert, 1781-1855--Criticism and interpretation.
Mills, Robert, 1781-1855--Exhibitions.
Princeton subject headings:
Architecture--United States--History--19th century.
Mills, Robert, 1781-1855--Criticism and interpretation.