History 29,861 Periodicals 17,095 Electronic books 11,080 Statistics 8,077 Conference papers and proceedings 7,226 Congresses 6,763 Sources 1,896 Maps 1,814 Bibliography 1,620 Case studies 1,513 Biography 1,372 Biographies 1,043 Early works to 1800 993 Early works 917 Electronic journals 797 Bibliographies 762 Academic theses 752 Périodiques 604 bibliography 603 bibliographie 602 bibliografía 601 reference 561 referencia 561 référence bibliographique 560 Thèses et écrits académiques 542 Dictionaries 531 Congrès 502 Internet videos 447 Périodiques 442 Statistiques 433 Aufsatzsammlung 424 Legislative hearings 422 Pictorial works 421 Festschriften 414 Educational films 392 graph 392 graphique 392 gráfico 390 Documentary films 389 Interviews 363 dissertations 307 Electronic book 278 Newspapers 277 Criticism, interpretation, etc 276 carte géographique 275 map 275 mapa 275 Handbooks, manuals, etc 270 Conference papers and proceedings 266 Atlases 261 theses 255 doctoral dissertations 254 masters theses 254 Catalogs 251 Academic Dissertation 245 Feature films 232 Directories 231 Nonfiction films 231 Handbooks and manuals 227 Fiction 225 Actes de congrès 211 Forecasts 199 Video recordings 189 Census data 178 Government publications 166 Databases 159 Indexes 154 Autobiographies 152 Essays 141 Military history 137 Serial publications 136 Correspondence 134 Études de cas 133 Periodical 126 Congress 124 Church history 118 Kongress 118 Census 117 Drama 117 Local history 116 Congrès 114 Newsreels 114 periodicals 111 Exhibition catalogs 107 Computer network resources 105 Chronology 104 Exhibitions 104 Abstracts 102 Texts 101 Hochschulschrift 100 Legislative materials 98 Thematic maps 98 Pamphlets 96 Facsimiles 94 Records and correspondence 93 Illustrated works 92 Miscellanea 92 Anecdotes 91 Encyclopedias 88 CD-ROMs 86