Sources 167,066
History 117,409
Early works to 1800 103,912
Electronic books 65,890
Biography 48,807
Early works 42,053
Biographies 30,048
Periodicals 18,806
Criticism, interpretation, etc 13,135
Fiction 12,949
Broadsides 11,468
Bibliography 7,388
Catalogs 7,078
Trials, litigation, etc 6,854
Poetry 6,463
Print 6,397
Drama 5,611
Congresses 5,284
Instructional television programs 5,048
Correspondence 4,717
Autobiographies 4,600
Pictorial works 4,564
Portraits 4,502
Exhibitions 4,495
Church history 4,362
Conference papers and proceedings 4,340
Internet videos 4,105
Caricatures and cartoons 3,968
Dictionaries 3,654
Controversial literature 3,609
Bibliographies 3,519
Statistics 3,508
Pamphlets 3,329
Directories 3,255
Case studies 3,252
Sermons 3,245
Cases 3,085
Military history 3,066
Maps 3,049
Video recordings 2,932
Humor 2,791
Historical fiction 2,780
Exhibition catalogs 2,767
Handbooks and manuals 2,646
Naval history 2,622
Handbooks, manuals, etc 2,518
Records and correspondence 2,457
Personal narratives, British 2,421
Diaries 2,412
Personal correspondence 2,299
Anecdotes 2,274
Personal narratives 2,255
Newspapers 2,201
Feature films 2,113
Tracts (literary works) 2,074
Nonfiction television programs 1,962
Video recordings for the hearing impaired 1,846
Guidebooks 1,845
Registers 1,793
Documentary television programs 1,786
Advertisements 1,708
Specimens 1,679
Publishers' advertisements 1,622
Juvenile literature 1,499
Annotations (Provenance) 1,474
Novels 1,454
Letters 1,438
Genealogy 1,435
Treaties 1,408
Archives 1,378
Academic theses 1,360
Interviews 1,290
In art 1,264
Trial and arbitral proceedings 1,251
British 1,221
Poems 1,203
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 1,033
Booksellers' advertisements 1,017
Thèses et écrits académiques 1,009
Film adaptations 993
Juvenile works 985
Artists' books 966
Tables 949
Armorial bookplates (Provenance) 947
Illustrated works 937
Mystery fiction 937
Blank forms 914
Drawing 872
Fiction films 872
Satires (Visual works) 819
Wood engravings 813
Detective and mystery fiction 749
Juvenile fiction 729