'In the 1760s these 2 surveyors used milestones to mark the boundary line between Maryland & Pennsylvania'
Mason & Dixon
AMERICAN HISTORY: In the 1760s these 2 surveyors used milestones to mark the boundary line between Maryland & Pennsylvania
In the 1760s these 2 surveyors used milestones to mark the boundary line between Maryland & Pennsylvania
In the 1760s these 2 surveyors used milestones to mark the boundary line between Maryland & Pennsylvania
AMERICAN HISTORY
Mason & Dixon
AMERICAN HISTORY