History 12,946 Congresses 6,563 Electronic books 6,051 Conference papers and proceedings 5,457 Periodicals 4,605 Maps 2,108 Biography 1,869 Early works to 1800 1,672 Bibliography 1,431 Internet videos 1,295 Biographies 1,192 Criticism, interpretation, etc 1,029 Catalogs 909 Case studies 888 Sources 884 Early works 859 Exhibitions 835 Dictionaries 737 Statistics 729 Pictorial works 727 Exhibition catalogs 693 Bibliographies 586 Fiction 531 Directories 517 Congrès 276 Military history 269 Electronic journals 266 Guidebooks 252 Church history 249 Personal narratives 237 Juvenile literature 229 Autobiographies 224 Conference papers and proceedings 222 Cross-cultural studies 217 Handbooks, manuals, etc 205 Documentary films 195 Congress 193 Feature films 187 Juvenile works 184 Aufsatzsammlung 182 Festschriften 181 Electronic book 180 Illustrated works 159 Correspondence 155 Early maps 153 Poetry 153 Diaries 152 Périodiques 141 Video recordings 141 Handbooks and manuals 128 Academic theses 126 Congrès 120 Classification 118 Périodiques 113 Drama 111 Indexes 111 Folklore 105 Expositions 103 Actes de congrès 102 Interviews 97 Travel literature 97 Encyclopedias 92 Periodical 91 Art 90 Études de cas 87 Sound recordings 83 Documentary television programs 81 Records and correspondence 81 Catalogues 80 Legislative hearings 80 Nonfiction films 80 Anecdotes 79 Translations 79 Ouvrages avant 1800 77 Personal correspondence 76 Travel writing 76 Facsimiles 73 Educational films 72 Textbooks 72 Thèses et écrits académiques 71 Identification 70 Ouvrages illustrés 70 Topographic maps 68 Tables 67 Kongress 65 Music 65 bibliography 60 Physical maps 59 Aerial views 58 Databases 58 Novels 58 Thematic maps 57 Atlases 56 Comic books, strips, etc 56 Chronology 54 In art 54 Photographs 54 Pictorial maps 54 Essays 53 bibliografía 53