Columbia subject headings:
Catherine II, Empress of Russia, 1729-1796--Correspondence--Exhibitions.
Gustav III, King of Sweden, 1746-1792--Correspondence--Exhibitions.
Russia--History--Catherine II, 1762-1796--Exhibitions.
Russia--Kings and rulers--Correspondence--Exhibitions.
Sweden--History--Gustav III, 1771-1792--Exhibitions.
Sweden--Kings and rulers--Correspondence--Exhibitions.
Harvard subject headings:
Catherine II, Empress of Russia, 1729-1796--Correspondence--Exhibitions.
Gustav III, King of Sweden, 1746-1792. Correspondence--Exhibitions.
Russia--History--Catherine II, 1762-1796--Exhibitions.
Russia--Kings and rulers--Correspondence--Exhibitions.
Sweden--History--Gustav III, 1771-1792--Exhibitions.
Sweden--Kings and rulers--Correspondence--Exhibitions.
Princeton subject headings:
Catherine II, Empress of Russia, 1729-1796. Correspondence--Exhibitions.
Empresses--Russia--Correspondence--Exhibitions.
Gustav III, King of Sweden, 1746-1792. Correspondence--Exhibitions.
Russia--History--Catherine II, 1762-1796--Exhibitions.
Sweden--History--Gustav III, 1771-1792--Exhibitions.
Sweden--Kings and rulers--Correspondence--Exhibitions.