Columbia subject headings:
Clarke, Mary Anne, 1776?-1852--Portraits.
Frederick Augustus, Prince, Duke of York and Albany, 1763-1827.
Great Britain--History--George III, 1760-1820.
Mistresses--England--Biography.
Wardle, Gwyllym Lloyd, 1762?-1833.
Harvard subject headings:
Clarke, Mary Anne, 1776?-1852.
Frederick Augustus, Prince, Duke of York and Albany, 1763-1827.
Wardle, Gwyllym Lloyd, 1762?-1833.
Princeton subject headings: