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- Columbia, during slavery, African women would observe their surroundings and build maps with their braids, marking roads and routes, trails, trees, wooded areas, rivers and mountains.These became escape
- Map of Slave Escape Routes 79 | Scientific Diagram
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- Chapter 2 and Networks: Escaping the US-Mexico Borderlands in: Conditional Freedom
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- Harpers Ferry National Historical Park - Escaped Slave Robert Jackson: Beating Back the Odds Visitors ask if the park is aware of the town being utilized as a War escape
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