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Subject (Region)
- United States126
- France81
- Kansas51
- West United States51
- Bleeding Kansas and the Enduring Struggle for Freedom National Heritage Area48
- South America41
- Washington (D.C.)41
- Old Northwest38
- Canada27
- Africa24
- Maine24
- Waldo Patent24
- Texas22
- Caribbean Area18
- North Africa9
- New York (State)5
- Fort Ticonderoga3
- Georgia3
- Italy3
- Confederate States of America2