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Medium
- transcripts[remove]26
- sound recordings14
- oral histories (literary works)13
- photographs6
- black-and-white photographs5
- documentaries and factual works5
- instructional materials5
- articles4
- texts (document genres)4
- timelines (chronologies)4
- images (object genre)3
- interviews3
- letters (correspondence)3
- reports3
- correspondence2
- documents (object genre)2
- leaflets (printed works)2
- manuscripts (documents)2
- memorandums2
- news2