Genre
Legislative materials
790
History
426
Legislative hearings
105
Documentary films
75
Congresses
70
Conference papers and proceedings
49
Interviews
42
Television news programs
41
Biography
33
Case studies
31
Nonfiction films
25
Early works to 1800
22
Documentary television programs
20
Educational films
20
Biographies
17
Periodicals
16
Military history
15
Short films
15
Sources
15
Nonfiction television programs
10
Broadsides
8
Film clips
8
Bibliography
7
Feature films
7
Academic theses
5
Electronic books
5
Encyclopedias
5
Film excerpts
5
Dictionaries
4
Early works
4
Festschriften
4
Filmed interviews
4
Filmed speeches
4
Newsreels
4
Speeches
4
Controversial literature
3
Lectures
3
Maps
3
Messages
3
Statistics
3
Yearbooks
3
Audiobooks
2
Autobiographies
2
Booksellers' advertisements
2
Catalogs
2
Eulogies
2
Forecasts
2
Handbooks and manuals
2
Handbooks, manuals, etc
2
Panel discussions
2
more ...