Sources 167,065
History 117,407
Early works to 1800 103,762
Electronic books 64,631
Biography 48,809
Early works 42,054
Biographies 30,054
Periodicals 18,806
Criticism, interpretation, etc 13,137
Fiction 12,952
Broadsides 11,468
Bibliography 7,409
Catalogs 7,072
Trials, litigation, etc 6,854
Poetry 6,455
Print 6,397
Drama 5,611
Congresses 5,284
Instructional television programs 5,048
Correspondence 4,713
Autobiographies 4,602
Pictorial works 4,564
Portraits 4,500
Exhibitions 4,493
Church history 4,363
Conference papers and proceedings 4,341
Internet videos 4,105
Caricatures and cartoons 3,968
Dictionaries 3,653
Controversial literature 3,604
Bibliographies 3,520
Statistics 3,507
Pamphlets 3,326
Directories 3,256
Case studies 3,254
Sermons 3,235
Cases 3,085
Military history 3,069
Maps 3,044
Video recordings 2,933
Humor 2,786
Historical fiction 2,781
Exhibition catalogs 2,758
Handbooks and manuals 2,648
Naval history 2,622
Handbooks, manuals, etc 2,519
Records and correspondence 2,458
Personal narratives, British 2,421
Diaries 2,413
Personal correspondence 2,300
Anecdotes 2,275
Personal narratives 2,255
Newspapers 2,202
Feature films 2,113
Tracts (literary works) 2,071
Nonfiction television programs 1,962
Video recordings for the hearing impaired 1,847
Guidebooks 1,845
Registers 1,792
Documentary television programs 1,786
Advertisements 1,708
Specimens 1,679
Publishers' advertisements 1,622
Juvenile literature 1,498
Annotations (Provenance) 1,475
Novels 1,456
Letters 1,438
Genealogy 1,433
Treaties 1,400
Archives 1,379
Academic theses 1,360
Interviews 1,290
In art 1,263
Trial and arbitral proceedings 1,251
British 1,220
Poems 1,204
Indexes 1,196
Forms 1,129
Documentary films 1,083
Etchings 1,068
Engravings 1,052
Ephemera 1,052
Registers (Lists) 1,046
collective biographies 1,031
Booksellers' advertisements 1,016
Thèses et écrits académiques 1,009
Film adaptations 993
Juvenile works 985
Artists' books 966
Tables 949
Armorial bookplates (Provenance) 947
Illustrated works 938
Mystery fiction 937
Blank forms 915
Drawing 872
Fiction films 872
Satires (Visual works) 819
Wood engravings 813
Detective and mystery fiction 751
Juvenile fiction 729