Subject (Genre)
- Pictorial works131
- Electronic books108
- Nonfiction films107
- Streaming video89
- Documentary television programs88
- Early accounts to 160086
- Legislative hearings83
- Drama77
- Exhibitions73
- Posters62
- Periodicals60
- Correspondence57
- Poetry56
- Biographies55
- Catalogs50
- Educational films48
- Surveys48
- Short films46
- Memorials and Petitions45
- Television news programs42