Private bills 223,836
History 171,175
Electronic books 155,795
Biography 138,652
Periodicals 117,876
Legislative bills 111,979
Biographies 82,672
Statistics 82,276
Congresses 38,916
Fiction 34,999
Legislative hearings 34,661
Bibliography 32,955
Handbooks, manuals, etc 30,000
Conference papers and proceedings 29,298
Directories 24,502
Criticism, interpretation, etc 22,264
Legislative materials 21,496
Autobiographies 19,376
Sources 19,219
Case studies 18,862
Trials, litigation, etc 18,783
Maps 18,655
Catalogs 18,380
Drama 17,116
Exhibitions 16,869
Cases 16,651
Interviews 16,414
Government publications 16,336
Internet videos 16,197
Video recordings 14,684
Personal narratives 14,665
Pictorial works 14,503
Handbooks and manuals 14,176
Broadsides 13,741
Bibliographies 13,705
Feature films 13,108
Documentary films 12,743
Dictionaries 12,616
Exhibition catalogs 11,729
Printed ephemera 11,342
Rules and practice 11,334
Songs and music 10,961
Video recordings for the hearing impaired 10,678
Sound recordings 10,268
Poetry 10,213
Correspondence 9,620
Juvenile literature 9,616
Legislative histories 9,406
Speeches in Congress 8,895
Portraits 8,257
Educational films 7,862
Sermons 7,787
Music 7,363
Treaties 7,094
Rules 6,993
Nonfiction films 6,854
Academic theses 6,812
Specimens 6,517
In art 6,437
Early works to 1800 6,154
Controversial literature 6,056
Juvenile works 6,003
Print 5,920
DVD-Video discs 5,804
Architectural drawings 5,678
Poems 5,567
Diaries 5,511
Databases 5,306
Speeches 5,250
Designs and plans 5,130
Anecdotes 4,909
Comic books, strips, etc 4,712
Songs 4,662
Indexes 4,543
Records and correspondence 4,514
Zines 4,488
Casebooks (Law) 4,381
Television news programs 4,357
Congress 4,277
collective biographies 4,276
Novels 4,095
Messages 4,063
Guidebooks 4,048
Registers 4,004
Fiction films 3,981
Caricatures and cartoons 3,979
Comics (Graphic works) 3,968
Forms 3,904
Archives 3,886
Personal narratives, American 3,870
Illustrated works 3,851
Electronic journals 3,813
Personal correspondence 3,780
Radio news programs 3,737
Genealogy 3,705
Popular works 3,609
Census data 3,597
Congressional addresses 3,573
Compact discs 3,480
Study guides 3,458