Private bills 223,836
History 171,403
Electronic books 148,915
Biography 138,721
Periodicals 117,902
Legislative bills 111,979
Biographies 82,749
Statistics 82,511
Congresses 38,911
Fiction 35,045
Legislative hearings 34,663
Bibliography 33,001
Handbooks, manuals, etc 29,988
Conference papers and proceedings 29,300
Directories 24,489
Criticism, interpretation, etc 22,251
Legislative materials 21,510
Autobiographies 19,376
Sources 19,217
Case studies 18,896
Trials, litigation, etc 18,799
Maps 18,658
Catalogs 18,364
Drama 17,348
Exhibitions 16,883
Interviews 16,689
Cases 16,655
Government publications 16,348
Internet videos 16,223
Video recordings 14,857
Personal narratives 14,644
Pictorial works 14,520
Handbooks and manuals 14,169
Broadsides 13,743
Bibliographies 13,703
Feature films 13,379
Documentary films 12,831
Dictionaries 12,627
Exhibition catalogs 11,729
Rules and practice 11,334
Printed ephemera 11,326
Songs and music 10,959
Video recordings for the hearing impaired 10,937
Sound recordings 10,274
Poetry 10,154
Correspondence 9,616
Juvenile literature 9,593
Legislative histories 9,407
Speeches in Congress 8,813
Portraits 8,250
Educational films 7,870
Sermons 7,670
Music 7,363
Treaties 7,085
Rules 6,995
Nonfiction films 6,905
Academic theses 6,844
Specimens 6,535
In art 6,438
Juvenile works 6,021
DVD-Video discs 6,015
Controversial literature 5,934
Early works to 1800 5,931
Print 5,920
Architectural drawings 5,679
Poems 5,569
Diaries 5,511
Databases 5,310
Speeches 5,257
Designs and plans 5,129
Anecdotes 4,900
Comic books, strips, etc 4,726
Songs 4,668
Television news programs 4,617
Indexes 4,542
Records and correspondence 4,510
Zines 4,504
Casebooks (Law) 4,382
Congress 4,259
Fiction films 4,232
collective biographies 4,167
Novels 4,086
Messages 4,062
Guidebooks 4,040
Registers 4,000
Caricatures and cartoons 3,983
Comics (Graphic works) 3,979
Forms 3,904
Archives 3,887
Personal narratives, American 3,876
Illustrated works 3,847
Census data 3,818
Electronic journals 3,794
Personal correspondence 3,772
Radio news programs 3,737
Genealogy 3,709
Popular works 3,610
Congressional addresses 3,575
Film adaptations 3,507
Compact discs 3,481