Congresses 906,733 Criticism, interpretation, etc 830,553 Conference papers and proceedings 623,883 Catalogs 359,140 Case studies 116,096 Commentaries 112,085 Correspondence 106,042 Controversial literature 64,351 Chamber music 62,948 Church history 60,587 Congress 56,352 Comic books, strips, etc 47,876 Cases 39,456 Comics (Graphic works) 39,354 Concertos 37,434 Congrès 30,295 Compact discs 30,279 Chronology 27,509 Caricatures and cartoons 26,458 Classification 24,907 Corporation reports 23,466 Cookbooks 23,259 Congrès 20,068 Catalogues d'exposition 18,503 Comedy films 18,486 Catalogues 16,988 Chronologies 16,838 Cross-cultural studies 15,617 CD-ROMs 14,559 Conference papers and proceedings 13,431 Collections 12,735 Census data 12,503 Conversation and phrase books 12,360 Cantatas 11,522 Catechisms 11,192 Computer network resources 9,482 Constitutions 8,389 Census 8,220 Concordances 8,068 Case Reports 7,162 Catalogues raisonnés 6,628 Charts, diagrams, etc 6,453 Court decisions and opinions 6,404 Cremation volumes 6,249 Constitution 6,206 Catalogs and collections 5,452 Comedies 5,410 Chapbooks 5,276 Conference proceedings 5,200 Casebooks (Law) 5,028 Charters 5,022 Critiques littéraires 4,753 Catalog 4,690 Comparative studies 4,680 Community cookbooks 4,599 Collected Work 4,450 Cookbook 4,441 Census, 1990 4,312 Catalogues raisonnés 4,308 Cartes géographiques 4,289 Compact discs (singles) 4,272 Congressional addresses 4,225 Charters and articles of incorporation 4,024 Comic books 3,870 Children's stories 3,803 Correspondance 3,761 Calendars 3,759 Claims 3,647 Constitutional amendments 3,574 Church records 3,508 Congresses (form) 3,502 Crime films 3,467 Comedy plays 3,387 Commercial treaties 3,326 Concert films 3,214 Christmas music 3,076 Cadastral maps 3,038 Christian fiction 2,954 Comedy 2,940 Census, 1980 2,819 Clippings 2,812 Catalogues raisonnés 2,772 Correspondance privée 2,762 Carols 2,620 Computer games 2,587 Curricula 2,586 Creeds 2,577 Campaign literature 2,545 Chants et musique 2,543 Census records 2,493 Carriers' addresses 2,468 Children's films 2,392 Chants 2,353 Composition and exercises 2,259 Computer music 2,194 Collected Works 2,190 Codices 2,052 Concerti grossi 2,018 Census, 2000 1,990 Controlled vocabularies 1,929