History 1,087 History and criticism 239 Politics and government 171 Music 169 World War, 1939-1945 106 Social conditions 86 Political aspects 75 Mais ... Foreign relations 64 Social aspects 61 Modernism (Literature) 53 Criticism and interpretation 52 Social life and customs 51 Piano music 48 Race relations 48 Influence 47 World War, 1914-1918 43 Political activity 38 Communism 36 Intellectual life 35 Orchestral music 34 Religious aspects 32 Church history 31 Vietnam War, 1961-1975 28 African Americans 27 American literature 27 Cold War 27 English literature 27 Economic conditions 25 Jews 25 Nationalism 25 menos ...