History 90 Social conditions 35 Social life and customs 22 Politics and government 17 Ethnic relations 16 Chinese Americans 12 Description and travel 12 more ... Buildings, structures, etc 9 Manners and customs 9 Emigration and immigration 8 Ethnic identity 8 Intellectual life 7 Architecture 6 Environmental conditions 6 Social change 6 African Americans 5 Chinese American women 5 City planning 5 Cultural assimilation 5 Gay men 5 Gold mines and mining 5 History and criticism 5 Moral conditions 5 Political activity 5 Social aspects 5 Women immigrants 5 Businessmen 4 Civil rights 4 Effect of human beings on 4 Environmental aspects 4 less ...