Private bills 223,836
History 171,187
Electronic books 149,625
Biography 138,546
Periodicals 117,863
Legislative bills 111,979
Biographies 82,669
Statistics 82,277
Congresses 38,911
Fiction 34,963
Legislative hearings 34,661
Bibliography 33,032
Handbooks, manuals, etc 29,995
Conference papers and proceedings 29,302
Directories 24,495
Criticism, interpretation, etc 22,265
Legislative materials 21,496
Autobiographies 19,380
Sources 19,204
Case studies 18,868
Trials, litigation, etc 18,783
Maps 18,648
Catalogs 18,373
Drama 17,114
Exhibitions 16,862
Cases 16,654
Interviews 16,416
Government publications 16,339
Internet videos 16,197
Video recordings 14,693
Personal narratives 14,636
Pictorial works 14,500
Handbooks and manuals 14,178
Broadsides 13,739
Bibliographies 13,706
Feature films 13,112
Documentary films 12,748
Dictionaries 12,613
Exhibition catalogs 11,712
Rules and practice 11,332
Printed ephemera 11,326
Songs and music 10,956
Video recordings for the hearing impaired 10,681
Sound recordings 10,270
Poetry 10,139
Correspondence 9,611
Juvenile literature 9,604
Legislative histories 9,406
Speeches in Congress 8,812
Portraits 8,248
Educational films 7,862
Sermons 7,665
Music 7,359
Treaties 7,088
Rules 6,993
Nonfiction films 6,855
Academic theses 6,813
Specimens 6,523
In art 6,437
Juvenile works 6,004
Controversial literature 5,934
Early works to 1800 5,929
Print 5,920
DVD-Video discs 5,805
Architectural drawings 5,678
Poems 5,565
Diaries 5,508
Databases 5,308
Speeches 5,251
Designs and plans 5,128
Anecdotes 4,898
Comic books, strips, etc 4,715
Songs 4,665
Indexes 4,542
Records and correspondence 4,512
Zines 4,498
Casebooks (Law) 4,382
Television news programs 4,357
Congress 4,279
collective biographies 4,265
Novels 4,096
Messages 4,062
Guidebooks 4,038
Registers 3,995
Fiction films 3,984
Caricatures and cartoons 3,980
Comics (Graphic works) 3,972
Forms 3,905
Archives 3,886
Personal narratives, American 3,872
Illustrated works 3,845
Electronic journals 3,813
Personal correspondence 3,779
Radio news programs 3,737
Genealogy 3,703
Popular works 3,611
Census data 3,598
Congressional addresses 3,573
Compact discs 3,480
Study guides 3,460