History 388 Railroads 284 Roads 255 Description and travel 90 Streets 61 Histoire 58 Genealogy 45 more ... African Americans 40 Finance 39 Canals 36 Biography 33 Design and construction 33 Cemeteries 31 Church records and registers 30 Politics and government 28 Transportation 28 Antiquities 26 Church history 25 Race relations 24 Indians of North America 23 Routes 23 Social life and customs 23 Excavations (Archaeology) 22 Slavery 21 Social conditions 21 Early works to 1850 19 History, Local 19 Toll roads 18 Buildings, structures, etc 17 Historic buildings 17 Surveying 17 Anniversaries, etc 15 Maps 15 Coal 14 Noirs américains 14 Almanacs, American 13 Antislavery movements 13 Architecture 13 Commerce 13 Episcopalians 13 less ...