History 298 Politics and government 165 Presidents 132 Correspondence 99 Manuscripts 67 Authors, American 66 Soldiers 53 more ... Social life and customs 47 Humanists 44 Intellectual life 43 Manners and customs 40 World War, 1939-1945 39 Authors, English 37 Authors, Latin (Medieval and modern) 35 Travel 35 Sources 34 Correspondance 30 Social conditions 28 Description and travel 27 Philosophers 27 Armed Forces 26 Christian saints 26 Prime ministers 26 Manuscrits 25 Military campaigns 25 African Americans 24 Campaigns 24 Frontier and pioneer life 21 Women 21 Friendship 20 less ...