History 4,063 Maps 3,645 Electronic books 2,315 Early works to 1800 1,391 Congresses 1,260 Pictorial works 1,127 Periodicals 1,084 Biography 1,019 Conference papers and proceedings 990 Bibliography 963 Identification 779 Exhibitions 752 Guidebooks 728 Biographies 709 Catalogs 636 Classification 621 Fiction 621 Exhibition catalogs 540 Folklore 509 Directories 495 Criticism, interpretation, etc 493 Bibliographies 492 Field guides 472 Statistics 437 Sources 428 Early works 421 Dictionaries 369 Early maps 313 Illustrated works 276 Juvenile literature 269 Juvenile works 232 Legislative hearings 225 Documentary films 221 Internet videos 213 Poetry 208 Music 198 Handbooks, manuals, etc 194 Commercial treaties 168 Case studies 162 Facsimiles 147 Video recordings 143 Encyclopedias 142 Handbooks and manuals 118 Terminology 117 Atlases 113 Drama 109 Feature films 109 Academic theses 108 Databases 107 Autobiographies 105 Nonfiction films 102 Ouvrages illustrés 102 Indexes 99 Nomenclature 98 Art 94 Government publications 94 Juvenile fiction 93 Catalogs and collections 92 Textbooks 89 Diaries 88 Newspapers 86 Thematic maps 86 Interviews 82 Treaties 80 Thèses et écrits académiques 76 Video recordings for the hearing impaired 76 Documentary television programs 75 Educational films 75 Novels 74 Church history 73 Electronic book 73 Romans, nouvelles, etc 72 Anecdotes 70 Records and correspondence 70 Reference works 69 Directory 67 Portraits 67 Catalogues 66 Correspondence 66 Historical fiction 66 Gazetteers 65 Sound recordings 65 Tables 65 Legislative materials 64 Maps (documents) 63 Auction catalogs 62 Cross-cultural studies 62 Early Maps 62 Military history 61 Catalogues d'exposition 60 Aufsatzsammlung 59 Congress 59 Pictorial maps 59 Congrès 58 exhibition catalogs 57 Digital Maps 56 Romans 56 Specimens 56 map 56 Glossaries, vocabularies, etc 54