History 18 Biography 17 Motion picture industry 15 Motion pictures 12 Fiction 11 Motion picture producers and directors 6 Social conditions 6 Afro-Americans 5 Police 5 Air 4 Harbors 4 History and criticism 4 Juvenile delinquency 4 Motion picture actors and actresses 4 Pollution 4 African Americans 3 Angels 3 Architecture, Modern 3 Case studies 3 Criticism and interpretation 3 Economic conditions 3 Hydrodynamics 3 Mendoza, Luis (Fictitious character) 3 Mexican Americans 3 Trade-unions 3 Angels in literature 2 Bibliography 2 Catalogs 2 City planning 2 Employment 2