Description and travel History 38 Pictorial works 24 Guidebooks 22 Social life and customs 20 History -- 12 Culture -- 11 more ... Natural history -- 10 Tourism -- 9 Biography -- 7 Economic conditions 7 Politics and government -- 7 Journeys -- 6 Politics and government 6 Culture 5 Civilization 4 Islam -- 4 Social conditions 4 Tours 4 Customs 3 Description and travel -- 3 Pictorial work 3 Botany -- 2 Buddhism -- 2 Civilization -- 2 Controversial literature 2 Economic conditions -- 2 Ethnology -- 2 Guidebook 2 Guidebooks -- 2 less ...