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Mason–Dixon line

Surveyed border line between U.S. states of Delaware, Maryland, and Pennsylvania

The Mason–Dixon line is a demarcation line separating four U.S. states: Pennsylvania, Maryland, Delaware and West Virginia. It was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon as part of the resolution of a border dispute involving Maryland, Pennsylvania, and Delaware in the colonial United States.

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File:Mason-dixon-line.gifFile:Mason_and_Dixon.pngFile:Mason_Dixon_Line_-_Rail_Trail.jpgFile:Mason-Dixon_Survey_Historical_Marker_Front_and_South_Sts_Philadelphia_PA_(DSC_3153).jpgFile:Delaware-wedge.svgFile:Marycolony.pngFile:Masondixonmarker.jpgFile:A_Plan_of_the_West_Line_or_Parallel_of_Latitude_-_WDL.pngFile:The_great_allegheny_passage_in_fall_view_of_wind_turbines.jpg
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