Guidebooks 367 Description and travel 57 Geology 41 Architecture 24 Hiking 16 History 16 Buildings, structures, etc 15 Historic buildings 11 Travel 11 Forest reserves 10 Forests and forestry 10 Natural history 9 Antiquities 8 Automobile travel 7 National parks and reserves 6 Buildings 5 Directories 5 Guide-books 5 Historic sites 5 Commerce 4 Literary landmarks 4 Monuments 4 Parks 4 Roads 4 Skis and skiing 4 Tours 4 Architecture, Modern 3 Art 3 Castles 3 Church architecture 3