Columbia subject headings:
Impostors and imposture--Russia--History.
Peter III, Emperor of Russia, 1728-1762.
Russia--History--Peter III, 1762.
Harvard subject headings:
Peter III, Emperor of Russia, 1728-1762--Legends.
Russia--History--Catherine II, 1762-1796.
Russia--History--Peter III, 1762.
Princeton subject headings:
Impostors and imposture--Russia--History.
Peter III, Emperor of Russia, 1728-1762.
Russia--History--Peter III, 1762.