Private bills 223,836
History 171,405
Electronic books 148,915
Biography 138,713
Periodicals 117,899
Legislative bills 111,979
Biographies 82,766
Statistics 82,511
Congresses 38,907
Fiction 35,044
Legislative hearings 34,663
Bibliography 33,001
Handbooks, manuals, etc 29,988
Conference papers and proceedings 29,302
Directories 24,489
Criticism, interpretation, etc 22,253
Legislative materials 21,503
Autobiographies 19,379
Sources 19,217
Case studies 18,889
Trials, litigation, etc 18,801
Maps 18,658
Catalogs 18,364
Drama 17,348
Exhibitions 16,882
Interviews 16,688
Cases 16,655
Government publications 16,359
Internet videos 16,223
Video recordings 14,823
Personal narratives 14,644
Pictorial works 14,521
Handbooks and manuals 14,174
Broadsides 13,743
Bibliographies 13,705
Feature films 13,376
Documentary films 12,832
Dictionaries 12,628
Exhibition catalogs 11,728
Rules and practice 11,334
Printed ephemera 11,326
Songs and music 10,958
Video recordings for the hearing impaired 10,936
Sound recordings 10,274
Poetry 10,154
Correspondence 9,617
Juvenile literature 9,593
Legislative histories 9,407
Speeches in Congress 8,813
Portraits 8,250
Educational films 7,870
Sermons 7,670
Music 7,361
Treaties 7,085
Rules 6,995
Nonfiction films 6,905
Academic theses 6,841
Specimens 6,535
In art 6,438
Juvenile works 6,022
DVD-Video discs 6,016
Controversial literature 5,933
Early works to 1800 5,931
Print 5,920
Architectural drawings 5,679
Poems 5,568
Diaries 5,510
Databases 5,310
Speeches 5,257
Designs and plans 5,129
Anecdotes 4,900
Comic books, strips, etc 4,728
Songs 4,668
Television news programs 4,617
Indexes 4,542
Records and correspondence 4,510
Zines 4,504
Casebooks (Law) 4,384
Congress 4,258
Fiction films 4,231
collective biographies 4,175
Novels 4,086
Messages 4,062
Guidebooks 4,040
Registers 4,000
Caricatures and cartoons 3,983
Comics (Graphic works) 3,980
Forms 3,904
Archives 3,887
Personal narratives, American 3,876
Illustrated works 3,847
Census data 3,821
Electronic journals 3,794
Personal correspondence 3,775
Radio news programs 3,737
Genealogy 3,709
Popular works 3,610
Congressional addresses 3,575
Film adaptations 3,507
Compact discs 3,481