History 12,314 Congresses 10,204 Conference papers and proceedings 7,046 Periodicals 6,070 Electronic books 5,698 Bibliography 3,180 Criticism, interpretation, etc 3,159 Biography 2,221 Bibliographies 1,296 Biographies 1,237 Sources 1,169 Case studies 1,159 Exhibitions 908 Statistics 905 Catalogs 897 Dictionaries 696 Interviews 674 Internet videos 617 Church history 616 Exhibition catalogs 606 Early works to 1800 598 Directories 583 Fiction 518 Sound recordings 510 Electronic journals 458 Popular music 403 Early works 401 Pictorial works 395 Congrès 382 Essays 334 Maps 326 Educational films 322 Early accounts to 1600 279 Classification 257 Aufsatzsammlung 251 Documentary films 249 Indexes 208 Songs 205 Conference papers and proceedings 198 Congress 194 Streaming audio 188 Academic theses 182 Festschriften 179 Music 175 Drama 174 Périodiques 170 Video recordings 170 Handbooks, manuals, etc 163 Poetry 162 Actes de congrès 154 Feature films 154 Correspondence 148 Encyclopedias 140 Périodiques 139 Cross-cultural studies 136 Anecdotes 128 Thèses et écrits académiques 128 reference 128 referencia 128 référence bibliographique 128 Legislative hearings 127 bibliography 122 bibliographie 117 bibliografía 116 Downloadable audio file 108 Nonfiction films 104 Textbooks 104 Electronic book 103 Periodical 103 In art 101 Facsimiles 100 Scores 100 Guidebooks 98 Études de cas 97 CD-ROMs 95 Poster 95 Congrès 89 Handbooks and manuals 89 Folklore 87 Juvenile literature 87 Autobiographies 84 DVD-Video discs 83 Military history 83 Databases 82 Diaries 76 Imprints 76 Readers 76 Translations 76 proceedings (reports) 76 Oral histories (literary works) 75 Bio-bibliography 74 Expositions 74 dissertations 72 graph 71 graphique 71 gráfico 71 Illustrated works 70 Novels 70 Oral histories 70 Juvenile works 67