This 19th century tunnel hid runaway slaves in Milton, Wis.
This 19th century tunnel hid runaway slaves in Milton, Wis. Courtesy of the Milton Historical Society
This 19th century tunnel hid runaway slaves in Milton, Wis. Courtesy of the Milton Historical Society

Cambrian: Opinion

November 22, 2013 11:09 AM

Thoughts at 37,000 feet

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