Genre
Indexes
Bibliography
2,809
Periodicals
2,643
History
2,255
Index
1,238
Bibliographies
1,158
Sources
1,027
Genealogy
984
Electronic books
913
Catalogs
894
Biography
775
indexes (reference sources)
722
Maps
420
Dictionaries
388
Biographies
375
Statutes and codes
307
Deeds
245
Imprints
245
Directories
236
Abstracts
217
Early works to 1800
207
Criticism, interpretation, etc
205
Databases
186
Index maps
182
Tables of contents
175
Statistics
160
Cases
159
Registers
147
Microform catalogs
146
Digests
131
Archives
121
Concordances
109
Treaties
97
Newspapers
86
Chronology
83
Classification
83
Electronic reference sources
76
Registers (Lists)
75
Bibliographie
72
Early works
71
Court decisions and opinions
70
Correspondence
67
Family histories
67
Périodiques
66
Congresses
65
Exhibitions
65
CD-ROMs
64
Reviews
64
Online databases
60
Periodical
60
more ...