Genre
Sources
History
411
Catalogs
182
Bibliography
177
Bibliographies
91
Electronic books
85
Indexes
64
Archives
55
Government publications
54
Records and correspondence
36
Catalogues
33
Microform catalogs
29
Genealogy
26
Messages
23
Correspondence
22
Interviews
21
Biography
20
Biographies
19
Personal narratives
19
Bibliographie
17
catalogs (documents)
17
Personal correspondence
16
bibliographies
16
Census, 1st, 1790
15
Census, 1790
14
Legislative materials
14
Catalog
11
Exhibitions
11
Treaties
11
Conference papers and proceedings
10
Congresses
10
Family histories
10
Index
10
Manuscripts
10
indexes (reference sources)
10
Military history
9
Autobiographies
8
Diaries
8
Exhibition catalogs
8
Handbooks, manuals, etc
8
Legislative hearings
8
Texts
8
Constitution
6
Constitutions
6
Early works to 1800
6
Handbooks and manuals
5
Internet resources
5
Records (Documents)
5
Church history
4
Directories
4
more ...