Places
- Soviet Union -- History14
- New York (N.Y.) -- Politics and government -- 1898-195113
- Soviet Union -- Emigration and immigration13
- Soviet Union -- Foreign relations -- United States13
- Soviet Union -- Politics and government13
- China -- Politics and government -- 20th century12
- New York (N.Y.) -- Politics and government12
- New York (State) -- Politics and government -- 1951-12
- Soviet Union -- History, Military12
- United States -- Economic conditions12
- China -- History -- 20th century11
- Russia -- History -- 1801-191711
- Soviet Union -- Study and teaching11
- United States -- History11
- United States -- History -- Colonial period, ca. 1600-177511
- China -- Politics and government -- 1912-194910
- New York (State) -- Politics and government -- 1865-195010
- Soviet Union10
- United States -- Social life and customs10
- China -- Description and travel9