Columbia subject headings:
Harvard subject headings:
Custine, Astolphe, marquis de, 1790-1857--Journeys--Soviet Union.
Gagern, Friedrich Balduin, Freiherr von, 1794-1848--Journeys--Soviet Union.
Russia--History--1801-1917.
Soviet Union--Description and travel.
Staël, Madame de (Anne-Louise-Germaine), 1766-1817--Journeys--Soviet Union.
Visitors, Foreign--Soviet Union.
Princeton subject headings:
Russia--Description and travel.
Russia--History--1801-1917.