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Medium
- instructional materials12
- teaching guides8
- oral histories (literary works)6
- resource units5
- transcripts5
- interviews4
- photographs4
- timelines (chronologies)4
- articles3
- sound recordings3
- annotated bibliographies2
- black-and-white photographs2
- legislative records2
- letters (correspondence)2
- maps (documents)2
- newspapers2
- web sites2
- biographies1
- fliers (printed matter)1
- identification photographs1