Genre
Periodicals
4,241
Nonfiction films
3,478
Sound recordings
3,275
Internet videos
2,720
Early works to 1800
1,937
Electronic books
1,863
Sources
1,722
Correspondence
1,175
Newspapers
985
Catalogs
854
NonFiction films
813
Treaties
625
Biography
617
Speeches in Congress
591
Actualities
581
History
567
Archives
521
Pictorial works
496
Speeches
464
Maps
377
Juvenile literature
328
Records and correspondence
319
Printed ephemera
257
Photographs
251
Biographies
224
Early works
224
Guidebooks
224
Humor
221
Fiction
213
Sermons
205
Librettos
181
Texts
181
Fiction films
179
Poetry
177
Diaries
173
Personal narratives
166
Case studies
146
Advertisements
142
Children's stories
140
Handbooks, manuals, etc
134
Controversial literature
130
Autobiographies
126
Exhibitions
126
Congresses
122
Military history
115
Statistics
114
Records and briefs
113
Art
110
Facsimiles
108
Sales catalogs
108
more ...