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Genre
- Portraits2,741
- Archival Materials2,559
- Letters (correspondence)1,740
- Pictorial Works778
- Photographic prints213
- Posters187
- Articles168
- Excerpts158
- Photographs147
- Legislation143
- Statistics114
- Postcards113
- Laboratory notebooks100
- Transcripts73
- Bibliography65
- Congresses60
- Periodicals56
- Reports50
- Instructional Films and Videos44
- Speeches44