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Medium
- instructional materials35
- teaching guides35
- resource units23
- interviews16
- transcripts13
- oral histories (literary works)11
- lesson plans6
- sound recordings6
- video recordings (physical artifacts)6
- fliers (printed matter)5
- timelines (chronologies)5
- articles4
- annotated bibliographies3
- black-and-white photographs3
- learning modules3
- photographs3
- correspondence2
- editorial cartoons2
- legislative records2
- letters (correspondence)2