Genre
Legislative hearings
1,951
Legislative materials
1,853
Periodicals
1,478
Statistics
1,111
Maps
1,050
Conference papers and proceedings
1,028
Technical reports
822
Handbooks and manuals
588
Congresses
585
Bibliographies
398
Biographies
351
Directories
319
Serial publications
161
Autobiographies
146
Catalogs
128
Databases
102
Guidebooks
80
Dictionaries
68
Fiction
66
Personal narratives
59
Treaties
58
Case studies
57
Sources
57
Data dictionaries
53
Government publications
53
Census data
52
Observations
48
Classification
43
Abstracts
40
Longitudinal studies
39
Rules and practice
35
Registers (Lists)
34
Personal correspondence
31
Indexes
29
Records (Documents)
27
Calendars
26
Drawings
26
Geographic information systems
26
Illustrated works
25
Programmed instructional materials
24
Tables (Data)
24
Controlled vocabularies
19
Commercial treaties
18
Records and correspondence
18
Software
18
Controversial literature
17
Topographic maps
16
Telephone directories
14
Vital statistics
14
Census, 2010
13
more ...