History 17,519 Periodicals 14,459 Electronic books 8,649 Statistics 8,352 Early works to 1800 7,905 Directories 5,119 Early works 3,537 Congresses 2,780 Sources 2,697 Broadsides 2,215 Conference papers and proceedings 2,128 Dictionaries 1,893 Handbooks, manuals, etc 1,323 Biography 1,043 Bibliography 851 Handbooks and manuals 721 Academic theses 670 Commercial treaties 662 Biographies 610 Thèses et écrits académiques 535 Maps 532 Advertisements 412 Catalogs 407 Case studies 391 Tables 391 Internet videos 383 Correspondence 356 Account books 353 Bibliographies 348 Records and correspondence 347 Exhibitions 329 Treaties 329 Educational films 307 Texts 272 Academic Dissertation 270 Classification 266 Legislative hearings 265 Printed ephemera 262 dissertations 250 Newspapers 249 Terminology 245 Electronic journals 240 Pictorial works 238 Exhibition catalogs 237 doctoral dissertations 232 masters theses 232 theses 232 Périodiques 212 Resolutions 196 Congrès 192 Telephone directories 192 Interviews 186 Guidebooks 185 Statistiques 182 Diaries 176 Naval history 165 Letters 162 Internet resource 156 Archives 146 Personal correspondence 144 Resolutions (Law) 141 Périodiques 135 Databases 131 Hochschulschrift 129 Oral histories 129 Serial publications 126 Military history 123 Tables (Data) 123 Yellow pages 120 Fiction 117 Registers 111 Encyclopedias 104 Festschriften 103 Legislative materials 103 City directories 101 Indexes 100 Tracts (literary works) 98 Aufsatzsammlung 97 Advertising periodicals 96 Gazetteers 96 Ouvrages avant 1800 94 Documentary films 89 Rules and practice 87 Actes de congrès 86 Trials, litigation, etc 86 Booksellers' advertisements 82 Criticism, interpretation, etc 82 Periodical 82 Genealogy 80 Speeches in Congress 79 Government publications 78 Ledgers 77 Electronic book 76 Facsimiles 74 Poetry 73 Accounts 71 reference 71 referencia 71 référence bibliographique 71 Annotations (Provenance) 70