Genre
Sources
History
963
Biography
70
Archives
65
Catalogs
43
Early works to 1800
39
Diaries
37
Correspondence
34
Biographies
33
Periodicals
32
Bibliography
30
Statistics
28
Electronic books
23
Broadsides
22
Records and correspondence
19
Personal correspondence
17
Advertisements
16
Congresses
15
Early works
14
Harvard students' notes
13
Regulations
13
Church history
12
Quelle
12
Bibliographies
11
Students
11
Textbooks
11
Criticism, interpretation, etc
10
Exhibitions
10
Prospectuses
10
Texts
10
Autobiographies
9
Commonplace books
9
Electronic reference sources
8
Facsimiles
8
Conference papers and proceedings
7
Dictionaries
7
Pictorial works
7
Databases
6
Indexes
6
Journaux intimes
6
Manuscripts
6
Orations
6
Sermons
6
Autograph albums
5
Genealogy
5
Microform catalogs
5
Ouvrages avant 1800
5
Records (documents)
5
Chronologies
4
Harvard textbooks
4
more ...