Treaties Foreign relations 37 Double taxation 5 Politics and government 5 History 4 Treaty-making power 4 Collections 3 International law 3 Alliances 2 Indians of North America 2 International relations 2 Peace 2 State succession 2 World War, 1939-1945 2 Aliens 1 Boundaries 1 Cases 1 Catalogs 1 Cherokee Indians 1 Colonization 1 Commercial policy 1 Commodity control 1 Constitutional law 1 Correspondence 1 Cross-cultural studies 1 Detente 1 Diplomacy 1 Eastern question (Far East) 1 Economic conditions 1 Ecuador 1