History 52 Railroads 10 Description and travel 6 Addresses, essays, lectures 4 Economic conditions 3 Industries 3 Politics and government 3 Social conditions 3 Social life and customs 3 Sources 3 Banks and banking 2 Bus lines 2 Foreign relations 2 Guide-books 2 History and criticism 2 Housing 2 Industrial archaeology 2 Inland navigation 2 Pictorial works 2 Radio broadcasting 2 Street-railroads 2 Study and teaching 2 Television broadcasting 2 Transportation 2 ART, VICTORIAN 1 Abandonment 1 Accessories 1 Advertising cards 1 Advice 1 Agriculture 1