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Subject (Genre)
- Internet videos3,129
- Correspondence1,259
- Records (Documents)594
- Periodicals187
- Early works to 1800185
- Documentary films150
- Executive Department Publications111
- Annual Reports87
- Biography83
- Congresses81
- Educational films62
- Periodical50
- Nonfiction films48
- Lectures42
- Names Lists40
- Bibliography39
- Handbooks, manuals, etc38
- Popular works37
- Biographies34
- Instructional films33