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Subject (Region)
- Africa189
- United States151
- South America117
- Bleeding Kansas and the Enduring Struggle for Freedom National Heritage Area90
- Kansas90
- Caribbean Area81
- West United States34
- Texas32
- France30
- Washington (D.C.)22
- Canada16
- Southern States10
- Liberia6
- Massachusetts5
- North Carolina5
- America3
- Boston3
- New York (State)3
- Old Northwest3
- Sierra Leone3