Columbia subject headings:
Mills, Robert, 1781-1855. Papers of Robert Mills, 1781-1855--Indexes.
Harvard subject headings:
Architects--United States--Manuscripts--Catalogs.
Architects--United States--Manuscripts.
Mills, Robert, 1781-1855
Mills, Robert, 1781-1855--Dictionaries.
Mills, Robert, 1781-1855--Manuscripts--Catalogs.
Princeton subject headings: