Genre
Sources
Archives
356
Electronic books
240
Periodicals
239
Records and correspondence
166
Biography
148
Early works to 1800
132
Correspondence
110
Bibliography
104
Congresses
88
Indexes
77
History
72
Newspapers
61
Catalogs
59
Textbooks
57
Microform catalogs
54
Controversial literature
46
Handbooks, manuals, etc
44
Broadsides
33
Genealogy
33
Registers
33
Trials, litigation, etc
25
Texts
23
Statistics
22
Fiction
16
Passenger lists
16
Treaties
13
Apologetic works
12
Case studies
10
Diaries
8
Facsimiles
8
Abstracts
7
Popular works
7
Cases
6
Charters
6
Dictionaries
6
Directories
6
Manuscripts
6
Portraits
6
Périodiques
6
Census, 1850
5
Census, 1860
5
Census, 1870
5
Charters, grants, privileges
5
Commentaries
5
Fuentes
5
Gazetteers
5
Literary collections
5
Pamphlets
5
Poetry
5
more ...