Congresses 906,597 Criticism, interpretation, etc 830,912 Conference papers and proceedings 623,837 Catalogs 359,176 Case studies 116,074 Commentaries 112,063 Correspondence 106,036 Controversial literature 64,558 Chamber music 62,952 Church history 60,583 Congress 56,349 Comic books, strips, etc 47,841 Cases 39,451 Comics (Graphic works) 39,324 Concertos 37,424 Compact discs 30,286 Congrès 30,248 Chronology 27,528 Caricatures and cartoons 26,457 Classification 24,909 Corporation reports 23,466 Cookbooks 23,250 Congrès 20,044 Catalogues d'exposition 18,756 Comedy films 18,474 Catalogues 17,364 Chronologies 16,905 Cross-cultural studies 15,610 CD-ROMs 14,560 Conference papers and proceedings 13,431 Collections 12,753 Census data 12,501 Conversation and phrase books 12,358 Cantatas 11,512 Catechisms 11,200 Computer network resources 9,482 Constitutions 8,386 Census 8,222 Concordances 8,068 Case Reports 7,168 Catalogues raisonnés 6,630 Charts, diagrams, etc 6,452 Court decisions and opinions 6,405 Cremation volumes 6,249 Constitution 6,206 Catalogs and collections 5,456 Comedies 5,410 Chapbooks 5,275 Conference proceedings 5,200 Charters 5,033 Casebooks (Law) 5,027 Critiques littéraires 4,735 Catalog 4,718 Comparative studies 4,678 Community cookbooks 4,598 Collected Work 4,450 Cookbook 4,442 Catalogues raisonnés 4,312 Census, 1990 4,312 Cartes géographiques 4,301 Compact discs (singles) 4,272 Congressional addresses 4,226 Charters and articles of incorporation 4,024 Comic books 3,864 Children's stories 3,802 Calendars 3,759 Correspondance 3,758 Claims 3,647 Constitutional amendments 3,574 Church records 3,508 Congresses (form) 3,505 Crime films 3,466 Comedy plays 3,383 Commercial treaties 3,329 Concert films 3,214 Christmas music 3,077 Cadastral maps 3,037 Christian fiction 2,953 Comedy 2,940 Census, 1980 2,817 Clippings 2,813 Catalogues raisonnés 2,773 Correspondance privée 2,763 Carols 2,621 Computer games 2,587 Curricula 2,586 Creeds 2,576 Campaign literature 2,545 Chants et musique 2,542 Census records 2,493 Carriers' addresses 2,468 Children's films 2,391 Chants 2,352 Composition and exercises 2,259 Computer music 2,194 Collected Works 2,190 Codices 2,052 Concerti grossi 2,018 Census, 2000 1,989 Controlled vocabularies 1,929